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<?php // vim: set et ts=4 sw=4 fdm=marker: // +----------------------------------------------------------------------+ // | PHP versions 4 and 5 | // +----------------------------------------------------------------------+ // | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, | // | Stig. S. Bakken, Lukas Smith | // | All rights reserved. | // +----------------------------------------------------------------------+ // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | // | API as well as database abstraction for PHP applications. | // | This LICENSE is in the BSD license style. | // | | // | Redistribution and use in source and binary forms, with or without | // | modification, are permitted provided that the following conditions | // | are met: | // | | // | Redistributions of source code must retain the above copyright | // | notice, this list of conditions and the following disclaimer. | // | | // | Redistributions in binary form must reproduce the above copyright | // | notice, this list of conditions and the following disclaimer in the | // | documentation and/or other materials provided with the distribution. | // | | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | // | Lukas Smith nor the names of his contributors may be used to endorse | // | or promote products derived from this software without specific prior| // | written permission. | // | | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | // | POSSIBILITY OF SUCH DAMAGE. | // +----------------------------------------------------------------------+ // | Author: Lukas Smith <smith@pooteeweet.org> | // +----------------------------------------------------------------------+ // // $Id: MDB2.php,v 1.292 2007/04/25 09:31:01 quipo Exp $ // /** * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ require_once 'PEAR.php'; // {{{ Error constants /** * The method mapErrorCode in each MDB2_dbtype implementation maps * native error codes to one of these. * * If you add an error code here, make sure you also add a textual * version of it in MDB2::errorMessage(). */ define('MDB2_OK', true); define('MDB2_ERROR', -1); define('MDB2_ERROR_SYNTAX', -2); define('MDB2_ERROR_CONSTRAINT', -3); define('MDB2_ERROR_NOT_FOUND', -4); define('MDB2_ERROR_ALREADY_EXISTS', -5); define('MDB2_ERROR_UNSUPPORTED', -6); define('MDB2_ERROR_MISMATCH', -7); define('MDB2_ERROR_INVALID', -8); define('MDB2_ERROR_NOT_CAPABLE', -9); define('MDB2_ERROR_TRUNCATED', -10); define('MDB2_ERROR_INVALID_NUMBER', -11); define('MDB2_ERROR_INVALID_DATE', -12); define('MDB2_ERROR_DIVZERO', -13); define('MDB2_ERROR_NODBSELECTED', -14); define('MDB2_ERROR_CANNOT_CREATE', -15); define('MDB2_ERROR_CANNOT_DELETE', -16); define('MDB2_ERROR_CANNOT_DROP', -17); define('MDB2_ERROR_NOSUCHTABLE', -18); define('MDB2_ERROR_NOSUCHFIELD', -19); define('MDB2_ERROR_NEED_MORE_DATA', -20); define('MDB2_ERROR_NOT_LOCKED', -21); define('MDB2_ERROR_VALUE_COUNT_ON_ROW', -22); define('MDB2_ERROR_INVALID_DSN', -23); define('MDB2_ERROR_CONNECT_FAILED', -24); define('MDB2_ERROR_EXTENSION_NOT_FOUND',-25); define('MDB2_ERROR_NOSUCHDB', -26); define('MDB2_ERROR_ACCESS_VIOLATION', -27); define('MDB2_ERROR_CANNOT_REPLACE', -28); define('MDB2_ERROR_CONSTRAINT_NOT_NULL',-29); define('MDB2_ERROR_DEADLOCK', -30); define('MDB2_ERROR_CANNOT_ALTER', -31); define('MDB2_ERROR_MANAGER', -32); define('MDB2_ERROR_MANAGER_PARSE', -33); define('MDB2_ERROR_LOADMODULE', -34); define('MDB2_ERROR_INSUFFICIENT_DATA', -35); // }}} // {{{ Verbose constants /** * These are just helper constants to more verbosely express parameters to prepare() */ define('MDB2_PREPARE_MANIP', false); define('MDB2_PREPARE_RESULT', null); // }}} // {{{ Fetchmode constants /** * This is a special constant that tells MDB2 the user hasn't specified * any particular get mode, so the default should be used. */ define('MDB2_FETCHMODE_DEFAULT', 0); /** * Column data indexed by numbers, ordered from 0 and up */ define('MDB2_FETCHMODE_ORDERED', 1); /** * Column data indexed by column names */ define('MDB2_FETCHMODE_ASSOC', 2); /** * Column data as object properties */ define('MDB2_FETCHMODE_OBJECT', 3); /** * For multi-dimensional results: normally the first level of arrays * is the row number, and the second level indexed by column number or name. * MDB2_FETCHMODE_FLIPPED switches this order, so the first level of arrays * is the column name, and the second level the row number. */ define('MDB2_FETCHMODE_FLIPPED', 4); // }}} // {{{ Portability mode constants /** * Portability: turn off all portability features. * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_NONE', 0); /** * Portability: convert names of tables and fields to case defined in the * "field_case" option when using the query*(), fetch*() and tableInfo() methods. * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_FIX_CASE', 1); /** * Portability: right trim the data output by query*() and fetch*(). * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_RTRIM', 2); /** * Portability: force reporting the number of rows deleted. * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_DELETE_COUNT', 4); /** * Portability: not needed in MDB2 (just left here for compatibility to DB) * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_NUMROWS', 8); /** * Portability: makes certain error messages in certain drivers compatible * with those from other DBMS's. * * + mysql, mysqli: change unique/primary key constraints * MDB2_ERROR_ALREADY_EXISTS -> MDB2_ERROR_CONSTRAINT * * + odbc(access): MS's ODBC driver reports 'no such field' as code * 07001, which means 'too few parameters.' When this option is on * that code gets mapped to MDB2_ERROR_NOSUCHFIELD. * * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_ERRORS', 16); /** * Portability: convert empty values to null strings in data output by * query*() and fetch*(). * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_EMPTY_TO_NULL', 32); /** * Portability: removes database/table qualifiers from associative indexes * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES', 64); /** * Portability: turn on all portability features. * @see MDB2_Driver_Common::setOption() */ define('MDB2_PORTABILITY_ALL', 127); // }}} // {{{ Globals for class instance tracking /** * These are global variables that are used to track the various class instances */ $GLOBALS['_MDB2_databases'] = array(); $GLOBALS['_MDB2_dsninfo_default'] = array( 'phptype' => false, 'dbsyntax' => false, 'username' => false, 'password' => false, 'protocol' => false, 'hostspec' => false, 'port' => false, 'socket' => false, 'database' => false, 'mode' => false, ); // }}} // {{{ class MDB2 /** * The main 'MDB2' class is simply a container class with some static * methods for creating DB objects as well as some utility functions * common to all parts of DB. * * The object model of MDB2 is as follows (indentation means inheritance): * * MDB2 The main MDB2 class. This is simply a utility class * with some 'static' methods for creating MDB2 objects as * well as common utility functions for other MDB2 classes. * * MDB2_Driver_Common The base for each MDB2 implementation. Provides default * | implementations (in OO lingo virtual methods) for * | the actual DB implementations as well as a bunch of * | query utility functions. * | * +-MDB2_Driver_mysql The MDB2 implementation for MySQL. Inherits MDB2_Driver_Common. * When calling MDB2::factory or MDB2::connect for MySQL * connections, the object returned is an instance of this * class. * +-MDB2_Driver_pgsql The MDB2 implementation for PostGreSQL. Inherits MDB2_Driver_Common. * When calling MDB2::factory or MDB2::connect for PostGreSQL * connections, the object returned is an instance of this * class. * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2 { // {{{ function setOptions(&$db, $options) /** * set option array in an exiting database object * * @param MDB2_Driver_Common MDB2 object * @param array An associative array of option names and their values. * * @return mixed MDB2_OK or a PEAR Error object * * @access public */ function setOptions(&$db, $options) { if (is_array($options)) { foreach ($options as $option => $value) { $test = $db->setOption($option, $value); if (PEAR::isError($test)) { return $test; } } } return MDB2_OK; } // }}} // {{{ function classExists($classname) /** * Checks if a class exists without triggering __autoload * * @param string classname * * @return bool true success and false on error * @static * @access public */ function classExists($classname) { if (version_compare(phpversion(), "5.0", ">=")) { return class_exists($classname, false); } return class_exists($classname); } // }}} // {{{ function loadClass($class_name, $debug) /** * Loads a PEAR class. * * @param string classname to load * @param bool if errors should be suppressed * * @return mixed true success or PEAR_Error on failure * * @access public */ function loadClass($class_name, $debug) { if (!MDB2::classExists($class_name)) { $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; if ($debug) { $include = include_once($file_name); } else { $include = @include_once($file_name); } if (!$include) { if (!MDB2::fileExists($file_name)) { $msg = "unable to find package '$class_name' file '$file_name'"; } else { $msg = "unable to load class '$class_name' from file '$file_name'"; } $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, $msg); return $err; } } return MDB2_OK; } // }}} // {{{ function &factory($dsn, $options = false) /** * Create a new MDB2 object for the specified database type * * IMPORTANT: In order for MDB2 to work properly it is necessary that * you make sure that you work with a reference of the original * object instead of a copy (this is a PHP4 quirk). * * For example: * $db =& MDB2::factory($dsn); * ^^ * And not: * $db = MDB2::factory($dsn); * * @param mixed 'data source name', see the MDB2::parseDSN * method for a description of the dsn format. * Can also be specified as an array of the * format returned by MDB2::parseDSN. * @param array An associative array of option names and * their values. * * @return mixed a newly created MDB2 object, or false on error * * @access public */ function &factory($dsn, $options = false) { $dsninfo = MDB2::parseDSN($dsn); if (empty($dsninfo['phptype'])) { $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'no RDBMS driver specified'); return $err; } $class_name = 'MDB2_Driver_'.$dsninfo['phptype']; $debug = (!empty($options['debug'])); $err = MDB2::loadClass($class_name, $debug); if (PEAR::isError($err)) { return $err; } $db =& new $class_name(); $db->setDSN($dsninfo); $err = MDB2::setOptions($db, $options); if (PEAR::isError($err)) { return $err; } return $db; } // }}} // {{{ function &connect($dsn, $options = false) /** * Create a new MDB2 connection object and connect to the specified * database * * IMPORTANT: In order for MDB2 to work properly it is necessary that * you make sure that you work with a reference of the original * object instead of a copy (this is a PHP4 quirk). * * For example: * $db =& MDB2::connect($dsn); * ^^ * And not: * $db = MDB2::connect($dsn); * ^^ * * @param mixed 'data source name', see the MDB2::parseDSN * method for a description of the dsn format. * Can also be specified as an array of the * format returned by MDB2::parseDSN. * @param array An associative array of option names and * their values. * * @return mixed a newly created MDB2 connection object, or a MDB2 * error object on error * * @access public * @see MDB2::parseDSN */ function &connect($dsn, $options = false) { $db =& MDB2::factory($dsn, $options); if (PEAR::isError($db)) { return $db; } $err = $db->connect(); if (PEAR::isError($err)) { $dsn = $db->getDSN('string', 'xxx'); $db->disconnect(); $err->addUserInfo($dsn); return $err; } return $db; } // }}} // {{{ function &singleton($dsn = null, $options = false) /** * Returns a MDB2 connection with the requested DSN. * A new MDB2 connection object is only created if no object with the * requested DSN exists yet. * * IMPORTANT: In order for MDB2 to work properly it is necessary that * you make sure that you work with a reference of the original * object instead of a copy (this is a PHP4 quirk). * * For example: * $db =& MDB2::singleton($dsn); * ^^ * And not: * $db = MDB2::singleton($dsn); * ^^ * * @param mixed 'data source name', see the MDB2::parseDSN * method for a description of the dsn format. * Can also be specified as an array of the * format returned by MDB2::parseDSN. * @param array An associative array of option names and * their values. * * @return mixed a newly created MDB2 connection object, or a MDB2 * error object on error * * @access public * @see MDB2::parseDSN */ function &singleton($dsn = null, $options = false) { if ($dsn) { $dsninfo = MDB2::parseDSN($dsn); $dsninfo = array_merge($GLOBALS['_MDB2_dsninfo_default'], $dsninfo); $keys = array_keys($GLOBALS['_MDB2_databases']); for ($i=0, $j=count($keys); $i<$j; ++$i) { if (isset($GLOBALS['_MDB2_databases'][$keys[$i]])) { $tmp_dsn = $GLOBALS['_MDB2_databases'][$keys[$i]]->getDSN('array'); if (count(array_diff_assoc($tmp_dsn, $dsninfo)) == 0) { MDB2::setOptions($GLOBALS['_MDB2_databases'][$keys[$i]], $options); return $GLOBALS['_MDB2_databases'][$keys[$i]]; } } } } elseif (is_array($GLOBALS['_MDB2_databases']) && reset($GLOBALS['_MDB2_databases'])) { $db =& $GLOBALS['_MDB2_databases'][key($GLOBALS['_MDB2_databases'])]; return $db; } $db =& MDB2::factory($dsn, $options); return $db; } // }}} // {{{ function loadFile($file) /** * load a file (like 'Date') * * @param string name of the file in the MDB2 directory (without '.php') * * @return string name of the file that was included * * @access public */ function loadFile($file) { $file_name = 'MDB2'.DIRECTORY_SEPARATOR.$file.'.php'; if (!MDB2::fileExists($file_name)) { return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'unable to find: '.$file_name); } if (!include_once($file_name)) { return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'unable to load driver class: '.$file_name); } return $file_name; } // }}} // {{{ function apiVersion() /** * Return the MDB2 API version * * @return string the MDB2 API version number * * @access public */ function apiVersion() { return '2.4.1'; } // }}} // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null) /** * This method is used to communicate an error and invoke error * callbacks etc. Basically a wrapper for PEAR::raiseError * without the message string. * * @param mixed int error code * * @param int error mode, see PEAR_Error docs * * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the * error level (E_USER_NOTICE etc). If error mode is * PEAR_ERROR_CALLBACK, this is the callback function, * either as a function name, or as an array of an * object and method name. For other error modes this * parameter is ignored. * * @param string Extra debug information. Defaults to the last * query and native error code. * * @return PEAR_Error instance of a PEAR Error object * * @access private * @see PEAR_Error */ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null) { $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true); return $err; } // }}} // {{{ function isError($data, $code = null) /** * Tell whether a value is a MDB2 error. * * @param mixed the value to test * @param int if is an error object, return true * only if $code is a string and * $db->getMessage() == $code or * $code is an integer and $db->getCode() == $code * * @return bool true if parameter is an error * * @access public */ function isError($data, $code = null) { if (is_a($data, 'MDB2_Error')) { if (is_null($code)) { return true; } elseif (is_string($code)) { return $data->getMessage() === $code; } else { $code = (array)$code; return in_array($data->getCode(), $code); } } return false; } // }}} // {{{ function isConnection($value) /** * Tell whether a value is a MDB2 connection * * @param mixed value to test * * @return bool whether $value is a MDB2 connection * * @access public */ function isConnection($value) { return is_a($value, 'MDB2_Driver_Common'); } // }}} // {{{ function isResult($value) /** * Tell whether a value is a MDB2 result * * @param mixed value to test * * @return bool whether $value is a MDB2 result * * @access public */ function isResult($value) { return is_a($value, 'MDB2_Result'); } // }}} // {{{ function isResultCommon($value) /** * Tell whether a value is a MDB2 result implementing the common interface * * @param mixed value to test * * @return bool whether $value is a MDB2 result implementing the common interface * * @access public */ function isResultCommon($value) { return is_a($value, 'MDB2_Result_Common'); } // }}} // {{{ function isStatement($value) /** * Tell whether a value is a MDB2 statement interface * * @param mixed value to test * * @return bool whether $value is a MDB2 statement interface * * @access public */ function isStatement($value) { return is_a($value, 'MDB2_Statement'); } // }}} // {{{ function errorMessage($value = null) /** * Return a textual error message for a MDB2 error code * * @param int|array integer error code, null to get the current error code-message map, or an array with a new error code-message map * * @return string error message, or false if the error code was * not recognized * * @access public */ function errorMessage($value = null) { static $errorMessages; if (is_array($value)) { $errorMessages = $value; return MDB2_OK; } if (!isset($errorMessages)) { $errorMessages = array( MDB2_OK => 'no error', MDB2_ERROR => 'unknown error', MDB2_ERROR_ALREADY_EXISTS => 'already exists', MDB2_ERROR_CANNOT_CREATE => 'can not create', MDB2_ERROR_CANNOT_ALTER => 'can not alter', MDB2_ERROR_CANNOT_REPLACE => 'can not replace', MDB2_ERROR_CANNOT_DELETE => 'can not delete', MDB2_ERROR_CANNOT_DROP => 'can not drop', MDB2_ERROR_CONSTRAINT => 'constraint violation', MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint', MDB2_ERROR_DIVZERO => 'division by zero', MDB2_ERROR_INVALID => 'invalid', MDB2_ERROR_INVALID_DATE => 'invalid date or time', MDB2_ERROR_INVALID_NUMBER => 'invalid number', MDB2_ERROR_MISMATCH => 'mismatch', MDB2_ERROR_NODBSELECTED => 'no database selected', MDB2_ERROR_NOSUCHFIELD => 'no such field', MDB2_ERROR_NOSUCHTABLE => 'no such table', MDB2_ERROR_NOT_CAPABLE => 'MDB2 backend not capable', MDB2_ERROR_NOT_FOUND => 'not found', MDB2_ERROR_NOT_LOCKED => 'not locked', MDB2_ERROR_SYNTAX => 'syntax error', MDB2_ERROR_UNSUPPORTED => 'not supported', MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row', MDB2_ERROR_INVALID_DSN => 'invalid DSN', MDB2_ERROR_CONNECT_FAILED => 'connect failed', MDB2_ERROR_NEED_MORE_DATA => 'insufficient data supplied', MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found', MDB2_ERROR_NOSUCHDB => 'no such database', MDB2_ERROR_ACCESS_VIOLATION => 'insufficient permissions', MDB2_ERROR_LOADMODULE => 'error while including on demand module', MDB2_ERROR_TRUNCATED => 'truncated', MDB2_ERROR_DEADLOCK => 'deadlock detected', ); } if (is_null($value)) { return $errorMessages; } if (PEAR::isError($value)) { $value = $value->getCode(); } return isset($errorMessages[$value]) ? $errorMessages[$value] : $errorMessages[MDB2_ERROR]; } // }}} // {{{ function parseDSN($dsn) /** * Parse a data source name. * * Additional keys can be added by appending a URI query string to the * end of the DSN. * * The format of the supplied DSN is in its fullest form: * <code> * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true * </code> * * Most variations are allowed: * <code> * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644 * phptype://username:password@hostspec/database_name * phptype://username:password@hostspec * phptype://username@hostspec * phptype://hostspec/database * phptype://hostspec * phptype(dbsyntax) * phptype * </code> * * @param string Data Source Name to be parsed * * @return array an associative array with the following keys: * + phptype: Database backend used in PHP (mysql, odbc etc.) * + dbsyntax: Database used with regards to SQL syntax etc. * + protocol: Communication protocol to use (tcp, unix etc.) * + hostspec: Host specification (hostname[:port]) * + database: Database to use on the DBMS server * + username: User name for login * + password: Password for login * * @access public * @author Tomas V.V.Cox <cox@idecnet.com> */ function parseDSN($dsn) { $parsed = $GLOBALS['_MDB2_dsninfo_default']; if (is_array($dsn)) { $dsn = array_merge($parsed, $dsn); if (!$dsn['dbsyntax']) { $dsn['dbsyntax'] = $dsn['phptype']; } return $dsn; } // Find phptype and dbsyntax if (($pos = strpos($dsn, '://')) !== false) { $str = substr($dsn, 0, $pos); $dsn = substr($dsn, $pos + 3); } else { $str = $dsn; $dsn = null; } // Get phptype and dbsyntax // $str => phptype(dbsyntax) if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) { $parsed['phptype'] = $arr[1]; $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2]; } else { $parsed['phptype'] = $str; $parsed['dbsyntax'] = $str; } if (!count($dsn)) { return $parsed; } // Get (if found): username and password // $dsn => username:password@protocol+hostspec/database if (($at = strrpos($dsn,'@')) !== false) { $str = substr($dsn, 0, $at); $dsn = substr($dsn, $at + 1); if (($pos = strpos($str, ':')) !== false) { $parsed['username'] = rawurldecode(substr($str, 0, $pos)); $parsed['password'] = rawurldecode(substr($str, $pos + 1)); } else { $parsed['username'] = rawurldecode($str); } } // Find protocol and hostspec // $dsn => proto(proto_opts)/database if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) { $proto = $match[1]; $proto_opts = $match[2] ? $match[2] : false; $dsn = $match[3]; // $dsn => protocol+hostspec/database (old format) } else { if (strpos($dsn, '+') !== false) { list($proto, $dsn) = explode('+', $dsn, 2); } if ( strpos($dsn, '//') === 0 && strpos($dsn, '/', 2) !== false && $parsed['phptype'] == 'oci8' ) { //oracle's "Easy Connect" syntax: //"username/password@[//]host[:port][/service_name]" //e.g. "scott/tiger@//mymachine:1521/oracle" $proto_opts = $dsn; $dsn = null; } elseif (strpos($dsn, '/') !== false) { list($proto_opts, $dsn) = explode('/', $dsn, 2); } else { $proto_opts = $dsn; $dsn = null; } } // process the different protocol options $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp'; $proto_opts = rawurldecode($proto_opts); if (strpos($proto_opts, ':') !== false) { list($proto_opts, $parsed['port']) = explode(':', $proto_opts); } if ($parsed['protocol'] == 'tcp') { $parsed['hostspec'] = $proto_opts; } elseif ($parsed['protocol'] == 'unix') { $parsed['socket'] = $proto_opts; } // Get dabase if any // $dsn => database if ($dsn) { // /database if (($pos = strpos($dsn, '?')) === false) { $parsed['database'] = $dsn; // /database?param1=value1¶m2=value2 } else { $parsed['database'] = substr($dsn, 0, $pos); $dsn = substr($dsn, $pos + 1); if (strpos($dsn, '&') !== false) { $opts = explode('&', $dsn); } else { // database?param1=value1 $opts = array($dsn); } foreach ($opts as $opt) { list($key, $value) = explode('=', $opt); if (!isset($parsed[$key])) { // don't allow params overwrite $parsed[$key] = rawurldecode($value); } } } } return $parsed; } // }}} // {{{ function fileExists($file) /** * Checks if a file exists in the include path * * @param string filename * * @return bool true success and false on error * * @access public */ function fileExists($file) { // safe_mode does notwork with is_readable() if (!@ini_get('safe_mode')) { $dirs = explode(PATH_SEPARATOR, ini_get('include_path')); foreach ($dirs as $dir) { if (is_readable($dir . DIRECTORY_SEPARATOR . $file)) { return true; } } } else { $fp = @fopen($file, 'r', true); if (is_resource($fp)) { @fclose($fp); return true; } } return false; } // }}} } // }}} // {{{ class MDB2_Error extends PEAR_Error /** * MDB2_Error implements a class for reporting portable database error * messages. * * @package MDB2 * @category Database * @author Stig Bakken <ssb@fast.no> */ class MDB2_Error extends PEAR_Error { // {{{ constructor: function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, $level = E_USER_NOTICE, $debuginfo = null) /** * MDB2_Error constructor. * * @param mixed MDB2 error code, or string with error message. * @param int what 'error mode' to operate in * @param int what error level to use for $mode & PEAR_ERROR_TRIGGER * @param smixed additional debug info, such as the last query */ function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, $level = E_USER_NOTICE, $debuginfo = null) { if (is_null($code)) { $code = MDB2_ERROR; } $this->PEAR_Error('MDB2 Error: '.MDB2::errorMessage($code), $code, $mode, $level, $debuginfo); } // }}} } // }}} // {{{ class MDB2_Driver_Common extends PEAR /** * MDB2_Driver_Common: Base class that is extended by each MDB2 driver * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Driver_Common extends PEAR { // {{{ Variables (Properties) /** * index of the MDB2 object within the $GLOBALS['_MDB2_databases'] array * @var int * @access public */ var $db_index = 0; /** * DSN used for the next query * @var array * @access protected */ var $dsn = array(); /** * DSN that was used to create the current connection * @var array * @access protected */ var $connected_dsn = array(); /** * connection resource * @var mixed * @access protected */ var $connection = 0; /** * if the current opened connection is a persistent connection * @var bool * @access protected */ var $opened_persistent; /** * the name of the database for the next query * @var string * @access protected */ var $database_name = ''; /** * the name of the database currently selected * @var string * @access protected */ var $connected_database_name = ''; /** * server version information * @var string * @access protected */ var $connected_server_info = ''; /** * list of all supported features of the given driver * @var array * @access public */ var $supported = array( 'sequences' => false, 'indexes' => false, 'affected_rows' => false, 'summary_functions' => false, 'order_by_text' => false, 'transactions' => false, 'savepoints' => false, 'current_id' => false, 'limit_queries' => false, 'LOBs' => false, 'replace' => false, 'sub_selects' => false, 'auto_increment' => false, 'primary_key' => false, 'result_introspection' => false, 'prepared_statements' => false, 'identifier_quoting' => false, 'pattern_escaping' => false, 'new_link' => false, ); /** * Array of supported options that can be passed to the MDB2 instance. * * The options can be set during object creation, using * MDB2::connect(), MDB2::factory() or MDB2::singleton(). The options can * also be set after the object is created, using MDB2::setOptions() or * MDB2_Driver_Common::setOption(). * The list of available option includes: * <ul> * <li>$options['ssl'] -> boolean: determines if ssl should be used for connections</li> * <li>$options['field_case'] -> CASE_LOWER|CASE_UPPER: determines what case to force on field/table names</li> * <li>$options['disable_query'] -> boolean: determines if queries should be executed</li> * <li>$options['result_class'] -> string: class used for result sets</li> * <li>$options['buffered_result_class'] -> string: class used for buffered result sets</li> * <li>$options['result_wrap_class'] -> string: class used to wrap result sets into</li> * <li>$options['result_buffering'] -> boolean should results be buffered or not?</li> * <li>$options['fetch_class'] -> string: class to use when fetch mode object is used</li> * <li>$options['persistent'] -> boolean: persistent connection?</li> * <li>$options['debug'] -> integer: numeric debug level</li> * <li>$options['debug_handler'] -> string: function/method that captures debug messages</li> * <li>$options['debug_expanded_output'] -> bool: BC option to determine if more context information should be send to the debug handler</li> * <li>$options['default_text_field_length'] -> integer: default text field length to use</li> * <li>$options['lob_buffer_length'] -> integer: LOB buffer length</li> * <li>$options['log_line_break'] -> string: line-break format</li> * <li>$options['idxname_format'] -> string: pattern for index name</li> * <li>$options['seqname_format'] -> string: pattern for sequence name</li> * <li>$options['savepoint_format'] -> string: pattern for auto generated savepoint names</li> * <li>$options['statement_format'] -> string: pattern for prepared statement names</li> * <li>$options['seqcol_name'] -> string: sequence column name</li> * <li>$options['quote_identifier'] -> boolean: if identifier quoting should be done when check_option is used</li> * <li>$options['use_transactions'] -> boolean: if transaction use should be enabled</li> * <li>$options['decimal_places'] -> integer: number of decimal places to handle</li> * <li>$options['portability'] -> integer: portability constant</li> * <li>$options['modules'] -> array: short to long module name mapping for __call()</li> * <li>$options['emulate_prepared'] -> boolean: force prepared statements to be emulated</li> * <li>$options['datatype_map'] -> array: map user defined datatypes to other primitive datatypes</li> * <li>$options['datatype_map_callback'] -> array: callback function/method that should be called</li> * </ul> * * @var array * @access public * @see MDB2::connect() * @see MDB2::factory() * @see MDB2::singleton() * @see MDB2_Driver_Common::setOption() */ var $options = array( 'ssl' => false, 'field_case' => CASE_LOWER, 'disable_query' => false, 'result_class' => 'MDB2_Result_%s', 'buffered_result_class' => 'MDB2_BufferedResult_%s', 'result_wrap_class' => false, 'result_buffering' => true, 'fetch_class' => 'stdClass', 'persistent' => false, 'debug' => 0, 'debug_handler' => 'MDB2_defaultDebugOutput', 'debug_expanded_output' => false, 'default_text_field_length' => 4096, 'lob_buffer_length' => 8192, 'log_line_break' => "\n", 'idxname_format' => '%s_idx', 'seqname_format' => '%s_seq', 'savepoint_format' => 'MDB2_SAVEPOINT_%s', 'statement_format' => 'MDB2_STATEMENT_%1$s_%2$s', 'seqcol_name' => 'sequence', 'quote_identifier' => false, 'use_transactions' => true, 'decimal_places' => 2, 'portability' => MDB2_PORTABILITY_ALL, 'modules' => array( 'ex' => 'Extended', 'dt' => 'Datatype', 'mg' => 'Manager', 'rv' => 'Reverse', 'na' => 'Native', 'fc' => 'Function', ), 'emulate_prepared' => false, 'datatype_map' => array(), 'datatype_map_callback' => array(), 'nativetype_map_callback' => array(), ); /** * string array * @var string * @access protected */ var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => false, 'escape_pattern' => false); /** * identifier quoting * @var array * @access protected */ var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"'); /** * sql comments * @var array * @access protected */ var $sql_comments = array( array('start' => '--', 'end' => "\n", 'escape' => false), array('start' => '/*', 'end' => '*/', 'escape' => false), ); /** * comparision wildcards * @var array * @access protected */ var $wildcards = array('%', '_'); /** * column alias keyword * @var string * @access protected */ var $as_keyword = ' AS '; /** * warnings * @var array * @access protected */ var $warnings = array(); /** * string with the debugging information * @var string * @access public */ var $debug_output = ''; /** * determine if there is an open transaction * @var bool * @access protected */ var $in_transaction = false; /** * the smart transaction nesting depth * @var int * @access protected */ var $nested_transaction_counter = null; /** * the first error that occured inside a nested transaction * @var MDB2_Error|bool * @access protected */ var $has_transaction_error = false; /** * result offset used in the next query * @var int * @access protected */ var $offset = 0; /** * result limit used in the next query * @var int * @access protected */ var $limit = 0; /** * Database backend used in PHP (mysql, odbc etc.) * @var string * @access public */ var $phptype; /** * Database used with regards to SQL syntax etc. * @var string * @access public */ var $dbsyntax; /** * the last query sent to the driver * @var string * @access public */ var $last_query; /** * the default fetchmode used * @var int * @access protected */ var $fetchmode = MDB2_FETCHMODE_ORDERED; /** * array of module instances * @var array * @access protected */ var $modules = array(); /** * determines of the PHP4 destructor emulation has been enabled yet * @var array * @access protected */ var $destructor_registered = true; // }}} // {{{ constructor: function __construct() /** * Constructor */ function __construct() { end($GLOBALS['_MDB2_databases']); $db_index = key($GLOBALS['_MDB2_databases']) + 1; $GLOBALS['_MDB2_databases'][$db_index] = &$this; $this->db_index = $db_index; } // }}} // {{{ function MDB2_Driver_Common() /** * PHP 4 Constructor */ function MDB2_Driver_Common() { $this->destructor_registered = false; $this->__construct(); } // }}} // {{{ destructor: function __destruct() /** * Destructor */ function __destruct() { $this->disconnect(false); } // }}} // {{{ function free() /** * Free the internal references so that the instance can be destroyed * * @return bool true on success, false if result is invalid * * @access public */ function free() { unset($GLOBALS['_MDB2_databases'][$this->db_index]); unset($this->db_index); return MDB2_OK; } // }}} // {{{ function __toString() /** * String conversation * * @return string representation of the object * * @access public */ function __toString() { $info = get_class($this); $info.= ': (phptype = '.$this->phptype.', dbsyntax = '.$this->dbsyntax.')'; if ($this->connection) { $info.= ' [connected]'; } return $info; } // }}} // {{{ function errorInfo($error = null) /** * This method is used to collect information about an error * * @param mixed error code or resource * * @return array with MDB2 errorcode, native error code, native message * * @access public */ function errorInfo($error = null) { return array($error, null, null); } // }}} // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null) /** * This method is used to communicate an error and invoke error * callbacks etc. Basically a wrapper for PEAR::raiseError * without the message string. * * @param mixed integer error code, or a PEAR error object (all other * parameters are ignored if this parameter is an object * @param int error mode, see PEAR_Error docs * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the * error level (E_USER_NOTICE etc). If error mode is * PEAR_ERROR_CALLBACK, this is the callback function, * either as a function name, or as an array of an * object and method name. For other error modes this * parameter is ignored. * @param string Extra debug information. Defaults to the last * query and native error code. * @param string name of the method that triggered the error * * @return PEAR_Error instance of a PEAR Error object * * @access public * @see PEAR_Error */ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null, $method = null) { $userinfo = "[Error message: $userinfo]\n"; // The error is yet a MDB2 error object if (PEAR::isError($code)) { // because we use the static PEAR::raiseError, our global // handler should be used if it is set if (is_null($mode) && !empty($this->_default_error_mode)) { $mode = $this->_default_error_mode; $options = $this->_default_error_options; } if (is_null($userinfo)) { $userinfo = $code->getUserinfo(); } $code = $code->getCode(); } elseif ($code == MDB2_ERROR_NOT_FOUND) { // extension not loaded: don't call $this->errorInfo() or the script // will die } elseif (isset($this->connection)) { if (!empty($this->last_query)) { $userinfo.= "[Last executed query: {$this->last_query}]\n"; } $native_errno = $native_msg = null; list($code, $native_errno, $native_msg) = $this->errorInfo($code); if (!is_null($native_errno) && $native_errno !== '') { $userinfo.= "[Native code: $native_errno]\n"; } if (!is_null($native_msg) && $native_msg !== '') { $userinfo.= "[Native message: ". strip_tags($native_msg) ."]\n"; } if (!is_null($method)) { $userinfo = $method.': '.$userinfo; } } $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true); if ($err->getMode() !== PEAR_ERROR_RETURN && isset($this->nested_transaction_counter) && !$this->has_transaction_error) { $this->has_transaction_error =& $err; } return $err; } // }}} // {{{ function resetWarnings() /** * reset the warning array * * @return void * * @access public */ function resetWarnings() { $this->warnings = array(); } // }}} // {{{ function getWarnings() /** * Get all warnings in reverse order. * This means that the last warning is the first element in the array * * @return array with warnings * * @access public * @see resetWarnings() */ function getWarnings() { return array_reverse($this->warnings); } // }}} // {{{ function setFetchMode($fetchmode, $object_class = 'stdClass') /** * Sets which fetch mode should be used by default on queries * on this connection * * @param int MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC * or MDB2_FETCHMODE_OBJECT * @param string the class name of the object to be returned * by the fetch methods when the * MDB2_FETCHMODE_OBJECT mode is selected. * If no class is specified by default a cast * to object from the assoc array row will be * done. There is also the possibility to use * and extend the 'MDB2_row' class. * * @return mixed MDB2_OK or MDB2 Error Object * * @access public * @see MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_OBJECT */ function setFetchMode($fetchmode, $object_class = 'stdClass') { switch ($fetchmode) { case MDB2_FETCHMODE_OBJECT: $this->options['fetch_class'] = $object_class; case MDB2_FETCHMODE_ORDERED: case MDB2_FETCHMODE_ASSOC: $this->fetchmode = $fetchmode; break; default: return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'invalid fetchmode mode', __FUNCTION__); } return MDB2_OK; } // }}} // {{{ function setOption($option, $value) /** * set the option for the db class * * @param string option name * @param mixed value for the option * * @return mixed MDB2_OK or MDB2 Error Object * * @access public */ function setOption($option, $value) { if (array_key_exists($option, $this->options)) { $this->options[$option] = $value; return MDB2_OK; } return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, "unknown option $option", __FUNCTION__); } // }}} // {{{ function getOption($option) /** * Returns the value of an option * * @param string option name * * @return mixed the option value or error object * * @access public */ function getOption($option) { if (array_key_exists($option, $this->options)) { return $this->options[$option]; } return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, "unknown option $option", __FUNCTION__); } // }}} // {{{ function debug($message, $scope = '', $is_manip = null) /** * set a debug message * * @param string message that should be appended to the debug variable * @param string usually the method name that triggered the debug call: * for example 'query', 'prepare', 'execute', 'parameters', * 'beginTransaction', 'commit', 'rollback' * @param array contains context information about the debug() call * common keys are: is_manip, time, result etc. * * @return void * * @access public */ function debug($message, $scope = '', $context = array()) { if ($this->options['debug'] && $this->options['debug_handler']) { if (!$this->options['debug_expanded_output']) { if (!empty($context['when']) && $context['when'] !== 'pre') { return null; } $context = empty($context['is_manip']) ? false : $context['is_manip']; } return call_user_func_array($this->options['debug_handler'], array(&$this, $scope, $message, $context)); } return null; } // }}} // {{{ function getDebugOutput() /** * output debug info * * @return string content of the debug_output class variable * * @access public */ function getDebugOutput() { return $this->debug_output; } // }}} // {{{ function escape($text) /** * Quotes a string so it can be safely used in a query. It will quote * the text so it can safely be used within a query. * * @param string the input string to quote * @param bool escape wildcards * * @return string quoted string * * @access public */ function escape($text, $escape_wildcards = false) { if ($escape_wildcards) { $text = $this->escapePattern($text); } $text = str_replace($this->string_quoting['end'], $this->string_quoting['escape'] . $this->string_quoting['end'], $text); return $text; } // }}} // {{{ function escapePattern($text) /** * Quotes pattern (% and _) characters in a string) * * EXPERIMENTAL * * WARNING: this function is experimental and may change signature at * any time until labelled as non-experimental * * @param string the input string to quote * * @return string quoted string * * @access public */ function escapePattern($text) { if ($this->string_quoting['escape_pattern']) { $text = str_replace($this->string_quoting['escape_pattern'], $this->string_quoting['escape_pattern'] . $this->string_quoting['escape_pattern'], $text); foreach ($this->wildcards as $wildcard) { $text = str_replace($wildcard, $this->string_quoting['escape_pattern'] . $wildcard, $text); } } return $text; } // }}} // {{{ function quoteIdentifier($str, $check_option = false) /** * Quote a string so it can be safely used as a table or column name * * Delimiting style depends on which database driver is being used. * * NOTE: just because you CAN use delimited identifiers doesn't mean * you SHOULD use them. In general, they end up causing way more * problems than they solve. * * Portability is broken by using the following characters inside * delimited identifiers: * + backtick (<kbd>`</kbd>) -- due to MySQL * + double quote (<kbd>"</kbd>) -- due to Oracle * + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access * * Delimited identifiers are known to generally work correctly under * the following drivers: * + mssql * + mysql * + mysqli * + oci8 * + pgsql * + sqlite * * InterBase doesn't seem to be able to use delimited identifiers * via PHP 4. They work fine under PHP 5. * * @param string identifier name to be quoted * @param bool check the 'quote_identifier' option * * @return string quoted identifier string * * @access public */ function quoteIdentifier($str, $check_option = false) { if ($check_option && !$this->options['quote_identifier']) { return $str; } $str = str_replace($this->identifier_quoting['end'], $this->identifier_quoting['escape'] . $this->identifier_quoting['end'], $str); return $this->identifier_quoting['start'] . $str . $this->identifier_quoting['end']; } // }}} // {{{ function getAsKeyword() /** * Gets the string to alias column * * @return string to use when aliasing a column */ function getAsKeyword() { return $this->as_keyword; } // }}} // {{{ function getConnection() /** * Returns a native connection * * @return mixed a valid MDB2 connection object, * or a MDB2 error object on error * * @access public */ function getConnection() { $result = $this->connect(); if (PEAR::isError($result)) { return $result; } return $this->connection; } // }}} // {{{ function _fixResultArrayValues(&$row, $mode) /** * Do all necessary conversions on result arrays to fix DBMS quirks * * @param array the array to be fixed (passed by reference) * @param array bit-wise addition of the required portability modes * * @return void * * @access protected */ function _fixResultArrayValues(&$row, $mode) { switch ($mode) { case MDB2_PORTABILITY_EMPTY_TO_NULL: foreach ($row as $key => $value) { if ($value === '') { $row[$key] = null; } } break; case MDB2_PORTABILITY_RTRIM: foreach ($row as $key => $value) { if (is_string($value)) { $row[$key] = rtrim($value); } } break; case MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES: $tmp_row = array(); foreach ($row as $key => $value) { $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; } $row = $tmp_row; break; case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL): foreach ($row as $key => $value) { if ($value === '') { $row[$key] = null; } elseif (is_string($value)) { $row[$key] = rtrim($value); } } break; case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): $tmp_row = array(); foreach ($row as $key => $value) { if (is_string($value)) { $value = rtrim($value); } $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; } $row = $tmp_row; break; case (MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): $tmp_row = array(); foreach ($row as $key => $value) { if ($value === '') { $value = null; } $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; } $row = $tmp_row; break; case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): $tmp_row = array(); foreach ($row as $key => $value) { if ($value === '') { $value = null; } elseif (is_string($value)) { $value = rtrim($value); } $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; } $row = $tmp_row; break; } } // }}} // {{{ function &loadModule($module, $property = null, $phptype_specific = null) /** * loads a module * * @param string name of the module that should be loaded * (only used for error messages) * @param string name of the property into which the class will be loaded * @param bool if the class to load for the module is specific to the * phptype * * @return object on success a reference to the given module is returned * and on failure a PEAR error * * @access public */ function &loadModule($module, $property = null, $phptype_specific = null) { if (!$property) { $property = strtolower($module); } if (!isset($this->{$property})) { $version = $phptype_specific; if ($phptype_specific !== false) { $version = true; $class_name = 'MDB2_Driver_'.$module.'_'.$this->phptype; $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; } if ($phptype_specific === false || (!MDB2::classExists($class_name) && !MDB2::fileExists($file_name)) ) { $version = false; $class_name = 'MDB2_'.$module; $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; } $err = MDB2::loadClass($class_name, $this->getOption('debug')); if (PEAR::isError($err)) { return $err; } // load modul in a specific version if ($version) { if (method_exists($class_name, 'getClassName')) { $class_name_new = call_user_func(array($class_name, 'getClassName'), $this->db_index); if ($class_name != $class_name_new) { $class_name = $class_name_new; $err = MDB2::loadClass($class_name, $this->getOption('debug')); if (PEAR::isError($err)) { return $err; } } } } if (!MDB2::classExists($class_name)) { $err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null, "unable to load module '$module' into property '$property'", __FUNCTION__); return $err; } $this->{$property} =& new $class_name($this->db_index); $this->modules[$module] =& $this->{$property}; if ($version) { // this will be used in the connect method to determine if the module // needs to be loaded with a different version if the server // version changed in between connects $this->loaded_version_modules[] = $property; } } return $this->{$property}; } // }}} // {{{ function __call($method, $params) /** * Calls a module method using the __call magic method * * @param string Method name. * @param array Arguments. * * @return mixed Returned value. */ function __call($method, $params) { $module = null; if (preg_match('/^([a-z]+)([A-Z])(.*)$/', $method, $match) && isset($this->options['modules'][$match[1]]) ) { $module = $this->options['modules'][$match[1]]; $method = strtolower($match[2]).$match[3]; if (!isset($this->modules[$module]) || !is_object($this->modules[$module])) { $result =& $this->loadModule($module); if (PEAR::isError($result)) { return $result; } } } else { foreach ($this->modules as $key => $foo) { if (is_object($this->modules[$key]) && method_exists($this->modules[$key], $method) ) { $module = $key; break; } } } if (!is_null($module)) { return call_user_func_array(array(&$this->modules[$module], $method), $params); } trigger_error(sprintf('Call to undefined function: %s::%s().', get_class($this), $method), E_USER_ERROR); } // }}} // {{{ function beginTransaction($savepoint = null) /** * Start a transaction or set a savepoint. * * @param string name of a savepoint to set * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function beginTransaction($savepoint = null) { $this->debug('Starting transaction', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'transactions are not supported', __FUNCTION__); } // }}} // {{{ function commit($savepoint = null) /** * Commit the database changes done during a transaction that is in * progress or release a savepoint. This function may only be called when * auto-committing is disabled, otherwise it will fail. Therefore, a new * transaction is implicitly started after committing the pending changes. * * @param string name of a savepoint to release * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function commit($savepoint = null) { $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'commiting transactions is not supported', __FUNCTION__); } // }}} // {{{ function rollback($savepoint = null) /** * Cancel any database changes done during a transaction or since a specific * savepoint that is in progress. This function may only be called when * auto-committing is disabled, otherwise it will fail. Therefore, a new * transaction is implicitly started after canceling the pending changes. * * @param string name of a savepoint to rollback to * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function rollback($savepoint = null) { $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'rolling back transactions is not supported', __FUNCTION__); } // }}} // {{{ function inTransaction($ignore_nested = false) /** * If a transaction is currently open. * * @param bool if the nested transaction count should be ignored * @return int|bool - an integer with the nesting depth is returned if a * nested transaction is open * - true is returned for a normal open transaction * - false is returned if no transaction is open * * @access public */ function inTransaction($ignore_nested = false) { if (!$ignore_nested && isset($this->nested_transaction_counter)) { return $this->nested_transaction_counter; } return $this->in_transaction; } // }}} // {{{ function setTransactionIsolation($isolation) /** * Set the transacton isolation level. * * @param string standard isolation level * READ UNCOMMITTED (allows dirty reads) * READ COMMITTED (prevents dirty reads) * REPEATABLE READ (prevents nonrepeatable reads) * SERIALIZABLE (prevents phantom reads) * @param array some transaction options: * 'wait' => 'WAIT' | 'NO WAIT' * 'rw' => 'READ WRITE' | 'READ ONLY' * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public * @since 2.1.1 */ function setTransactionIsolation($isolation, $options = array()) { $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true)); return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'isolation level setting is not supported', __FUNCTION__); } // }}} // {{{ function beginNestedTransaction($savepoint = false) /** * Start a nested transaction. * * EXPERIMENTAL * * WARNING: this function is experimental and may change signature at * any time until labelled as non-experimental * * @return mixed MDB2_OK on success/savepoint name, a MDB2 error on failure * * @access public * @since 2.1.1 */ function beginNestedTransaction() { if ($this->in_transaction) { ++$this->nested_transaction_counter; $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter); if ($this->supports('savepoints') && $savepoint) { return $this->beginTransaction($savepoint); } return MDB2_OK; } $this->has_transaction_error = false; $result = $this->beginTransaction(); $this->nested_transaction_counter = 1; return $result; } // }}} // {{{ function completeNestedTransaction($force_rollback = false, $release = false) /** * Finish a nested transaction by rolling back if an error occured or * committing otherwise. * * EXPERIMENTAL * * WARNING: this function is experimental and may change signature at * any time until labelled as non-experimental * * @param bool if the transaction should be rolled back regardless * even if no error was set within the nested transaction * @return mixed MDB_OK on commit/counter decrementing, false on rollback * and a MDB2 error on failure * * @access public * @since 2.1.1 */ function completeNestedTransaction($force_rollback = false) { if ($this->nested_transaction_counter > 1) { $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter); if ($this->supports('savepoints') && $savepoint) { if ($force_rollback || $this->has_transaction_error) { $result = $this->rollback($savepoint); if (!PEAR::isError($result)) { $result = false; $this->has_transaction_error = false; } } else { $result = $this->commit($savepoint); } } else { $result = MDB2_OK; } --$this->nested_transaction_counter; return $result; } $this->nested_transaction_counter = null; $result = MDB2_OK; // transaction has not yet been rolled back if ($this->in_transaction) { if ($force_rollback || $this->has_transaction_error) { $result = $this->rollback(); if (!PEAR::isError($result)) { $result = false; } } else { $result = $this->commit(); } } $this->has_transaction_error = false; return $result; } // }}} // {{{ function failNestedTransaction($error = null, $immediately = false) /** * Force setting nested transaction to failed. * * EXPERIMENTAL * * WARNING: this function is experimental and may change signature at * any time until labelled as non-experimental * * @param mixed value to return in getNestededTransactionError() * @param bool if the transaction should be rolled back immediately * @return bool MDB2_OK * * @access public * @since 2.1.1 */ function failNestedTransaction($error = null, $immediately = false) { if (is_null($error)) { $error = $this->has_transaction_error ? $this->has_transaction_error : true; } elseif (!$error) { $error = true; } $this->has_transaction_error = $error; if (!$immediately) { return MDB2_OK; } return $this->rollback(); } // }}} // {{{ function getNestedTransactionError() /** * The first error that occured since the transaction start. * * EXPERIMENTAL * * WARNING: this function is experimental and may change signature at * any time until labelled as non-experimental * * @return MDB2_Error|bool MDB2 error object if an error occured or false. * * @access public * @since 2.1.1 */ function getNestedTransactionError() { return $this->has_transaction_error; } // }}} // {{{ connect() /** * Connect to the database * * @return true on success, MDB2 Error Object on failure */ function connect() { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ setCharset($charset, $connection = null) /** * Set the charset on the current connection * * @param string charset * @param resource connection handle * * @return true on success, MDB2 Error Object on failure */ function setCharset($charset, $connection = null) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function disconnect($force = true) /** * Log out and disconnect from the database. * * @param bool if the disconnect should be forced even if the * connection is opened persistently * * @return mixed true on success, false if not connected and error * object on error * * @access public */ function disconnect($force = true) { $this->connection = 0; $this->connected_dsn = array(); $this->connected_database_name = ''; $this->opened_persistent = null; $this->connected_server_info = ''; $this->in_transaction = null; $this->nested_transaction_counter = null; return MDB2_OK; } // }}} // {{{ function setDatabase($name) /** * Select a different database * * @param string name of the database that should be selected * * @return string name of the database previously connected to * * @access public */ function setDatabase($name) { $previous_database_name = (isset($this->database_name)) ? $this->database_name : ''; $this->database_name = $name; $this->disconnect(false); return $previous_database_name; } // }}} // {{{ function getDatabase() /** * Get the current database * * @return string name of the database * * @access public */ function getDatabase() { return $this->database_name; } // }}} // {{{ function setDSN($dsn) /** * set the DSN * * @param mixed DSN string or array * * @return MDB2_OK * * @access public */ function setDSN($dsn) { $dsn_default = $GLOBALS['_MDB2_dsninfo_default']; $dsn = MDB2::parseDSN($dsn); if (array_key_exists('database', $dsn)) { $this->database_name = $dsn['database']; unset($dsn['database']); } $this->dsn = array_merge($dsn_default, $dsn); return $this->disconnect(false); } // }}} // {{{ function getDSN($type = 'string', $hidepw = false) /** * return the DSN as a string * * @param string format to return ("array", "string") * @param string string to hide the password with * * @return mixed DSN in the chosen type * * @access public */ function getDSN($type = 'string', $hidepw = false) { $dsn = array_merge($GLOBALS['_MDB2_dsninfo_default'], $this->dsn); $dsn['phptype'] = $this->phptype; $dsn['database'] = $this->database_name; if ($hidepw) { $dsn['password'] = $hidepw; } switch ($type) { // expand to include all possible options case 'string': $dsn = $dsn['phptype']. ($dsn['dbsyntax'] ? ('('.$dsn['dbsyntax'].')') : ''). '://'.$dsn['username'].':'. $dsn['password'].'@'.$dsn['hostspec']. ($dsn['port'] ? (':'.$dsn['port']) : ''). '/'.$dsn['database']; break; case 'array': default: break; } return $dsn; } // }}} // {{{ function &standaloneQuery($query, $types = null, $is_manip = false) /** * execute a query as database administrator * * @param string the SQL query * @param mixed array that contains the types of the columns in * the result set * @param bool if the query is a manipulation query * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function &standaloneQuery($query, $types = null, $is_manip = false) { $offset = $this->offset; $limit = $this->limit; $this->offset = $this->limit = 0; $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); $connection = $this->getConnection(); if (PEAR::isError($connection)) { return $connection; } $result =& $this->_doQuery($query, $is_manip, $connection, false); if (PEAR::isError($result)) { return $result; } if ($is_manip) { $affected_rows = $this->_affectedRows($connection, $result); return $affected_rows; } $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset); return $result; } // }}} // {{{ function _modifyQuery($query, $is_manip, $limit, $offset) /** * Changes a query string for various DBMS specific reasons * * @param string query to modify * @param bool if it is a DML query * @param int limit the number of rows * @param int start reading from given offset * * @return string modified query * * @access protected */ function _modifyQuery($query, $is_manip, $limit, $offset) { return $query; } // }}} // {{{ function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null) /** * Execute a query * @param string query * @param bool if the query is a manipulation query * @param resource connection handle * @param string database name * * @return result or error object * * @access protected */ function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null) { $this->last_query = $query; $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); if ($result) { if (PEAR::isError($result)) { return $result; } $query = $result; } $err =& $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); return $err; } // }}} // {{{ function _affectedRows($connection, $result = null) /** * Returns the number of rows affected * * @param resource result handle * @param resource connection handle * * @return mixed MDB2 Error Object or the number of rows affected * * @access private */ function _affectedRows($connection, $result = null) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function &exec($query) /** * Execute a manipulation query to the database and return the number of affected rows * * @param string the SQL query * * @return mixed number of affected rows on success, a MDB2 error on failure * * @access public */ function &exec($query) { $offset = $this->offset; $limit = $this->limit; $this->offset = $this->limit = 0; $query = $this->_modifyQuery($query, true, $limit, $offset); $connection = $this->getConnection(); if (PEAR::isError($connection)) { return $connection; } $result =& $this->_doQuery($query, true, $connection, $this->database_name); if (PEAR::isError($result)) { return $result; } $affectedRows = $this->_affectedRows($connection, $result); return $affectedRows; } // }}} // {{{ function &query($query, $types = null, $result_class = true, $result_wrap_class = false) /** * Send a query to the database and return any results * * @param string the SQL query * @param mixed array that contains the types of the columns in * the result set * @param mixed string which specifies which result class to use * @param mixed string which specifies which class to wrap results in * * @return mixed an MDB2_Result handle on success, a MDB2 error on failure * * @access public */ function &query($query, $types = null, $result_class = true, $result_wrap_class = false) { $offset = $this->offset; $limit = $this->limit; $this->offset = $this->limit = 0; $query = $this->_modifyQuery($query, false, $limit, $offset); $connection = $this->getConnection(); if (PEAR::isError($connection)) { return $connection; } $result =& $this->_doQuery($query, false, $connection, $this->database_name); if (PEAR::isError($result)) { return $result; } $result =& $this->_wrapResult($result, $types, $result_class, $result_wrap_class, $limit, $offset); return $result; } // }}} // {{{ function &_wrapResult($result, $types = array(), $result_class = true, $result_wrap_class = false, $limit = null, $offset = null) /** * wrap a result set into the correct class * * @param resource result handle * @param mixed array that contains the types of the columns in * the result set * @param mixed string which specifies which result class to use * @param mixed string which specifies which class to wrap results in * @param string number of rows to select * @param string first row to select * * @return mixed an MDB2_Result, a MDB2 error on failure * * @access protected */ function &_wrapResult($result, $types = array(), $result_class = true, $result_wrap_class = false, $limit = null, $offset = null) { if ($types === true) { if ($this->supports('result_introspection')) { $this->loadModule('Reverse', null, true); $tableInfo = $this->reverse->tableInfo($result); if (PEAR::isError($tableInfo)) { return $tableInfo; } $types = array(); foreach ($tableInfo as $field) { $types[] = $field['mdb2type']; } } else { $types = null; } } if ($result_class === true) { $result_class = $this->options['result_buffering'] ? $this->options['buffered_result_class'] : $this->options['result_class']; } if ($result_class) { $class_name = sprintf($result_class, $this->phptype); if (!MDB2::classExists($class_name)) { $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'result class does not exist '.$class_name, __FUNCTION__); return $err; } $result =& new $class_name($this, $result, $limit, $offset); if (!MDB2::isResultCommon($result)) { $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'result class is not extended from MDB2_Result_Common', __FUNCTION__); return $err; } if (!empty($types)) { $err = $result->setResultTypes($types); if (PEAR::isError($err)) { $result->free(); return $err; } } } if ($result_wrap_class === true) { $result_wrap_class = $this->options['result_wrap_class']; } if ($result_wrap_class) { if (!MDB2::classExists($result_wrap_class)) { $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'result wrap class does not exist '.$result_wrap_class, __FUNCTION__); return $err; } $result =& new $result_wrap_class($result, $this->fetchmode); } return $result; } // }}} // {{{ function getServerVersion($native = false) /** * return version information about the server * * @param bool determines if the raw version string should be returned * * @return mixed array with version information or row string * * @access public */ function getServerVersion($native = false) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function setLimit($limit, $offset = null) /** * set the range of the next query * * @param string number of rows to select * @param string first row to select * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function setLimit($limit, $offset = null) { if (!$this->supports('limit_queries')) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'limit is not supported by this driver', __FUNCTION__); } $limit = (int)$limit; if ($limit < 0) { return $this->raiseError(MDB2_ERROR_SYNTAX, null, null, 'it was not specified a valid selected range row limit', __FUNCTION__); } $this->limit = $limit; if (!is_null($offset)) { $offset = (int)$offset; if ($offset < 0) { return $this->raiseError(MDB2_ERROR_SYNTAX, null, null, 'it was not specified a valid first selected range row', __FUNCTION__); } $this->offset = $offset; } return MDB2_OK; } // }}} // {{{ function subSelect($query, $type = false) /** * simple subselect emulation: leaves the query untouched for all RDBMS * that support subselects * * @param string the SQL query for the subselect that may only * return a column * @param string determines type of the field * * @return string the query * * @access public */ function subSelect($query, $type = false) { if ($this->supports('sub_selects') === true) { return $query; } if (!$this->supports('sub_selects')) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } $col = $this->queryCol($query, $type); if (PEAR::isError($col)) { return $col; } if (!is_array($col) || count($col) == 0) { return 'NULL'; } if ($type) { $this->loadModule('Datatype', null, true); return $this->datatype->implodeArray($col, $type); } return implode(', ', $col); } // }}} // {{{ function replace($table, $fields) /** * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT * query, except that if there is already a row in the table with the same * key field values, the REPLACE query just updates its values instead of * inserting a new row. * * The REPLACE type of query does not make part of the SQL standards. Since * practically only MySQL and SQLite implement it natively, this type of * query isemulated through this method for other DBMS using standard types * of queries inside a transaction to assure the atomicity of the operation. * * @param string name of the table on which the REPLACE query will * be executed. * @param array associative array that describes the fields and the * values that will be inserted or updated in the specified table. The * indexes of the array are the names of all the fields of the table. * The values of the array are also associative arrays that describe * the values and other properties of the table fields. * * Here follows a list of field properties that need to be specified: * * value * Value to be assigned to the specified field. This value may be * of specified in database independent type format as this * function can perform the necessary datatype conversions. * * Default: this property is required unless the Null property is * set to 1. * * type * Name of the type of the field. Currently, all types MDB2 * are supported except for clob and blob. * * Default: no type conversion * * null * bool property that indicates that the value for this field * should be set to null. * * The default value for fields missing in INSERT queries may be * specified the definition of a table. Often, the default value * is already null, but since the REPLACE may be emulated using * an UPDATE query, make sure that all fields of the table are * listed in this function argument array. * * Default: 0 * * key * bool property that indicates that this field should be * handled as a primary key or at least as part of the compound * unique index of the table that will determine the row that will * updated if it exists or inserted a new row otherwise. * * This function will fail if no key field is specified or if the * value of a key field is set to null because fields that are * part of unique index they may not be null. * * Default: 0 * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function replace($table, $fields) { if (!$this->supports('replace')) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'replace query is not supported', __FUNCTION__); } $count = count($fields); $condition = $values = array(); for ($colnum = 0, reset($fields); $colnum < $count; next($fields), $colnum++) { $name = key($fields); if (isset($fields[$name]['null']) && $fields[$name]['null']) { $value = 'NULL'; } else { $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null; $value = $this->quote($fields[$name]['value'], $type); } $values[$name] = $value; if (isset($fields[$name]['key']) && $fields[$name]['key']) { if ($value === 'NULL') { return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, 'key value '.$name.' may not be NULL', __FUNCTION__); } $condition[] = $name . '=' . $value; } } if (empty($condition)) { return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, 'not specified which fields are keys', __FUNCTION__); } $result = null; $in_transaction = $this->in_transaction; if (!$in_transaction && PEAR::isError($result = $this->beginTransaction())) { return $result; } $connection = $this->getConnection(); if (PEAR::isError($connection)) { return $connection; } $condition = ' WHERE '.implode(' AND ', $condition); $query = "DELETE FROM $table$condition"; $result =& $this->_doQuery($query, true, $connection); if (!PEAR::isError($result)) { $affected_rows = $this->_affectedRows($connection, $result); $insert = implode(', ', array_keys($values)); $values = implode(', ', $values); $query = "INSERT INTO $table ($insert) VALUES ($values)"; $result =& $this->_doQuery($query, true, $connection); if (!PEAR::isError($result)) { $affected_rows += $this->_affectedRows($connection, $result);; } } if (!$in_transaction) { if (PEAR::isError($result)) { $this->rollback(); } else { $result = $this->commit(); } } if (PEAR::isError($result)) { return $result; } return $affected_rows; } // }}} // {{{ function &prepare($query, $types = null, $result_types = null, $lobs = array()) /** * Prepares a query for multiple execution with execute(). * With some database backends, this is emulated. * prepare() requires a generic query as string like * 'INSERT INTO numbers VALUES(?,?)' or * 'INSERT INTO numbers VALUES(:foo,:bar)'. * The ? and :[a-zA-Z] and are placeholders which can be set using * bindParam() and the query can be send off using the execute() method. * * @param string the query to prepare * @param mixed array that contains the types of the placeholders * @param mixed array that contains the types of the columns in * the result set or MDB2_PREPARE_RESULT, if set to * MDB2_PREPARE_MANIP the query is handled as a manipulation query * @param mixed key (field) value (parameter) pair for all lob placeholders * * @return mixed resource handle for the prepared query on success, * a MDB2 error on failure * * @access public * @see bindParam, execute */ function &prepare($query, $types = null, $result_types = null, $lobs = array()) { $is_manip = ($result_types === MDB2_PREPARE_MANIP); $offset = $this->offset; $limit = $this->limit; $this->offset = $this->limit = 0; $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre')); if ($result) { if (PEAR::isError($result)) { return $result; } $query = $result; } $placeholder_type_guess = $placeholder_type = null; $question = '?'; $colon = ':'; $positions = array(); $position = 0; $ignores = $this->sql_comments; $ignores[] = $this->string_quoting; $ignores[] = $this->identifier_quoting; while ($position < strlen($query)) { $q_position = strpos($query, $question, $position); $c_position = strpos($query, $colon, $position); if ($q_position && $c_position) { $p_position = min($q_position, $c_position); } elseif ($q_position) { $p_position = $q_position; } elseif ($c_position) { $p_position = $c_position; } else { break; } if (is_null($placeholder_type)) { $placeholder_type_guess = $query[$p_position]; } $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position); if (PEAR::isError($new_pos)) { return $new_pos; } if ($new_pos != $position) { $position = $new_pos; continue; //evaluate again starting from the new position } if ($query[$position] == $placeholder_type_guess) { if (is_null($placeholder_type)) { $placeholder_type = $query[$p_position]; $question = $colon = $placeholder_type; if (!empty($types) && is_array($types)) { if ($placeholder_type == ':') { if (is_int(key($types))) { $types_tmp = $types; $types = array(); $count = -1; } } else { $types = array_values($types); } } } if ($placeholder_type == ':') { $parameter = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query); if ($parameter === '') { $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null, 'named parameter with an empty name', __FUNCTION__); return $err; } $positions[$p_position] = $parameter; $query = substr_replace($query, '?', $position, strlen($parameter)+1); // use parameter name in type array if (isset($count) && isset($types_tmp[++$count])) { $types[$parameter] = $types_tmp[$count]; } } else { $positions[$p_position] = count($positions); } $position = $p_position + 1; } else { $position = $p_position; } } $class_name = 'MDB2_Statement_'.$this->phptype; $statement = null; $obj =& new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj)); return $obj; } // }}} // {{{ function _skipDelimitedStrings($query, $position, $p_position) /** * Utility method, used by prepare() to avoid replacing placeholders within delimited strings. * Check if the placeholder is contained within a delimited string. * If so, skip it and advance the position, otherwise return the current position, * which is valid * * @param string $query * @param integer $position current string cursor position * @param integer $p_position placeholder position * * @return mixed integer $new_position on success * MDB2_Error on failure * * @access protected */ function _skipDelimitedStrings($query, $position, $p_position) { $ignores = $this->sql_comments; $ignores[] = $this->string_quoting; $ignores[] = $this->identifier_quoting; foreach ($ignores as $ignore) { if (!empty($ignore['start'])) { if (is_int($start_quote = strpos($query, $ignore['start'], $position)) && $start_quote < $p_position) { $end_quote = $start_quote; do { if (!is_int($end_quote = strpos($query, $ignore['end'], $end_quote + 1))) { if ($ignore['end'] === "\n") { $end_quote = strlen($query) - 1; } else { $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null, 'query with an unterminated text string specified', __FUNCTION__); return $err; } } } while ($ignore['escape'] && $query[($end_quote - 1)] == $ignore['escape']); $position = $end_quote + 1; return $position; } } } return $position; } // }}} // {{{ function quote($value, $type = null, $quote = true) /** * Convert a text value into a DBMS specific format that is suitable to * compose query statements. * * @param string text string value that is intended to be converted. * @param string type to which the value should be converted to * @param bool quote * @param bool escape wildcards * * @return string text string that represents the given argument value in * a DBMS specific format. * * @access public */ function quote($value, $type = null, $quote = true, $escape_wildcards = false) { $result = $this->loadModule('Datatype', null, true); if (PEAR::isError($result)) { return $result; } return $this->datatype->quote($value, $type, $quote, $escape_wildcards); } // }}} // {{{ function getDeclaration($type, $name, $field) /** * Obtain DBMS specific SQL code portion needed to declare * of the given type * * @param string type to which the value should be converted to * @param string name the field to be declared. * @param string definition of the field * * @return string DBMS specific SQL code portion that should be used to * declare the specified field. * * @access public */ function getDeclaration($type, $name, $field) { $result = $this->loadModule('Datatype', null, true); if (PEAR::isError($result)) { return $result; } return $this->datatype->getDeclaration($type, $name, $field); } // }}} // {{{ function compareDefinition($current, $previous) /** * Obtain an array of changes that may need to applied * * @param array new definition * @param array old definition * * @return array containing all changes that will need to be applied * * @access public */ function compareDefinition($current, $previous) { $result = $this->loadModule('Datatype', null, true); if (PEAR::isError($result)) { return $result; } return $this->datatype->compareDefinition($current, $previous); } // }}} // {{{ function supports($feature) /** * Tell whether a DB implementation or its backend extension * supports a given feature. * * @param string name of the feature (see the MDB2 class doc) * * @return bool|string if this DB implementation supports a given feature * false means no, true means native, * 'emulated' means emulated * * @access public */ function supports($feature) { if (array_key_exists($feature, $this->supported)) { return $this->supported[$feature]; } return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, "unknown support feature $feature", __FUNCTION__); } // }}} // {{{ function getSequenceName($sqn) /** * adds sequence name formatting to a sequence name * * @param string name of the sequence * * @return string formatted sequence name * * @access public */ function getSequenceName($sqn) { return sprintf($this->options['seqname_format'], preg_replace('/[^a-z0-9_\$.]/i', '_', $sqn)); } // }}} // {{{ function getIndexName($idx) /** * adds index name formatting to a index name * * @param string name of the index * * @return string formatted index name * * @access public */ function getIndexName($idx) { return sprintf($this->options['idxname_format'], preg_replace('/[^a-z0-9_\$]/i', '_', $idx)); } // }}} // {{{ function nextID($seq_name, $ondemand = true) /** * Returns the next free id of a sequence * * @param string name of the sequence * @param bool when true missing sequences are automatic created * * @return mixed MDB2 Error Object or id * * @access public */ function nextID($seq_name, $ondemand = true) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function lastInsertID($table = null, $field = null) /** * Returns the autoincrement ID if supported or $id or fetches the current * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) * * @param string name of the table into which a new row was inserted * @param string name of the field into which a new row was inserted * * @return mixed MDB2 Error Object or id * * @access public */ function lastInsertID($table = null, $field = null) { return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function currID($seq_name) /** * Returns the current id of a sequence * * @param string name of the sequence * * @return mixed MDB2 Error Object or id * * @access public */ function currID($seq_name) { $this->warnings[] = 'database does not support getting current sequence value, the sequence value was incremented'; return $this->nextID($seq_name); } // }}} // {{{ function queryOne($query, $type = null, $colnum = 0) /** * Execute the specified query, fetch the value from the first column of * the first row of the result set and then frees * the result set. * * @param string the SELECT query statement to be executed. * @param string optional argument that specifies the expected * datatype of the result set field, so that an eventual conversion * may be performed. The default datatype is text, meaning that no * conversion is performed * @param int the column number to fetch * * @return mixed MDB2_OK or field value on success, a MDB2 error on failure * * @access public */ function queryOne($query, $type = null, $colnum = 0) { $result = $this->query($query, $type); if (!MDB2::isResultCommon($result)) { return $result; } $one = $result->fetchOne($colnum); $result->free(); return $one; } // }}} // {{{ function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT) /** * Execute the specified query, fetch the values from the first * row of the result set into an array and then frees * the result set. * * @param string the SELECT query statement to be executed. * @param array optional array argument that specifies a list of * expected datatypes of the result set columns, so that the eventual * conversions may be performed. The default list of datatypes is * empty, meaning that no conversion is performed. * @param int how the array data should be indexed * * @return mixed MDB2_OK or data array on success, a MDB2 error on failure * * @access public */ function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT) { $result = $this->query($query, $types); if (!MDB2::isResultCommon($result)) { return $result; } $row = $result->fetchRow($fetchmode); $result->free(); return $row; } // }}} // {{{ function queryCol($query, $type = null, $colnum = 0) /** * Execute the specified query, fetch the value from the first column of * each row of the result set into an array and then frees the result set. * * @param string the SELECT query statement to be executed. * @param string optional argument that specifies the expected * datatype of the result set field, so that an eventual conversion * may be performed. The default datatype is text, meaning that no * conversion is performed * @param int the row number to fetch * * @return mixed MDB2_OK or data array on success, a MDB2 error on failure * * @access public */ function queryCol($query, $type = null, $colnum = 0) { $result = $this->query($query, $type); if (!MDB2::isResultCommon($result)) { return $result; } $col = $result->fetchCol($colnum); $result->free(); return $col; } // }}} // {{{ function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) /** * Execute the specified query, fetch all the rows of the result set into * a two dimensional array and then frees the result set. * * @param string the SELECT query statement to be executed. * @param array optional array argument that specifies a list of * expected datatypes of the result set columns, so that the eventual * conversions may be performed. The default list of datatypes is * empty, meaning that no conversion is performed. * @param int how the array data should be indexed * @param bool if set to true, the $all will have the first * column as its first dimension * @param bool used only when the query returns exactly * two columns. If true, the values of the returned array will be * one-element arrays instead of scalars. * @param bool if true, the values of the returned array is * wrapped in another array. If the same key value (in the first * column) repeats itself, the values will be appended to this array * instead of overwriting the existing values. * * @return mixed MDB2_OK or data array on success, a MDB2 error on failure * * @access public */ function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) { $result = $this->query($query, $types); if (!MDB2::isResultCommon($result)) { return $result; } $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group); $result->free(); return $all; } // }}} } // }}} // {{{ class MDB2_Result /** * The dummy class that all user space result classes should extend from * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Result { } // }}} // {{{ class MDB2_Result_Common extends MDB2_Result /** * The common result class for MDB2 result objects * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Result_Common extends MDB2_Result { // {{{ Variables (Properties) var $db; var $result; var $rownum = -1; var $types = array(); var $values = array(); var $offset; var $offset_count = 0; var $limit; var $column_names; // }}} // {{{ constructor: function __construct(&$db, &$result, $limit = 0, $offset = 0) /** * Constructor */ function __construct(&$db, &$result, $limit = 0, $offset = 0) { $this->db =& $db; $this->result =& $result; $this->offset = $offset; $this->limit = max(0, $limit - 1); } // }}} // {{{ function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0) /** * PHP 4 Constructor */ function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0) { $this->__construct($db, $result, $limit, $offset); } // }}} // {{{ function setResultTypes($types) /** * Define the list of types to be associated with the columns of a given * result set. * * This function may be called before invoking fetchRow(), fetchOne(), * fetchCol() and fetchAll() so that the necessary data type * conversions are performed on the data to be retrieved by them. If this * function is not called, the type of all result set columns is assumed * to be text, thus leading to not perform any conversions. * * @param array variable that lists the * data types to be expected in the result set columns. If this array * contains less types than the number of columns that are returned * in the result set, the remaining columns are assumed to be of the * type text. Currently, the types clob and blob are not fully * supported. * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function setResultTypes($types) { $load = $this->db->loadModule('Datatype', null, true); if (PEAR::isError($load)) { return $load; } $types = $this->db->datatype->checkResultTypes($types); if (PEAR::isError($types)) { return $types; } $this->types = $types; return MDB2_OK; } // }}} // {{{ function seek($rownum = 0) /** * Seek to a specific row in a result set * * @param int number of the row where the data can be found * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function seek($rownum = 0) { $target_rownum = $rownum - 1; if ($this->rownum > $target_rownum) { return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'seeking to previous rows not implemented', __FUNCTION__); } while ($this->rownum < $target_rownum) { $this->fetchRow(); } return MDB2_OK; } // }}} // {{{ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) /** * Fetch and return a row of data * * @param int how the array data should be indexed * @param int number of the row where the data can be found * * @return int data array on success, a MDB2 error on failure * * @access public */ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) { $err =& $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); return $err; } // }}} // {{{ function fetchOne($colnum = 0) /** * fetch single column from the next row from a result set * * @param int the column number to fetch * @param int number of the row where the data can be found * * @return string data on success, a MDB2 error on failure * * @access public */ function fetchOne($colnum = 0, $rownum = null) { $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC; $row = $this->fetchRow($fetchmode, $rownum); if (!is_array($row) || PEAR::isError($row)) { return $row; } if (!array_key_exists($colnum, $row)) { return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, 'column is not defined in the result set: '.$colnum, __FUNCTION__); } return $row[$colnum]; } // }}} // {{{ function fetchCol($colnum = 0) /** * Fetch and return a column from the current row pointer position * * @param int the column number to fetch * * @return mixed data array on success, a MDB2 error on failure * * @access public */ function fetchCol($colnum = 0) { $column = array(); $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC; $row = $this->fetchRow($fetchmode); if (is_array($row)) { if (!array_key_exists($colnum, $row)) { return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, 'column is not defined in the result set: '.$colnum, __FUNCTION__); } do { $column[] = $row[$colnum]; } while (is_array($row = $this->fetchRow($fetchmode))); } if (PEAR::isError($row)) { return $row; } return $column; } // }}} // {{{ function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) /** * Fetch and return all rows from the current row pointer position * * @param int $fetchmode the fetch mode to use: * + MDB2_FETCHMODE_ORDERED * + MDB2_FETCHMODE_ASSOC * + MDB2_FETCHMODE_ORDERED | MDB2_FETCHMODE_FLIPPED * + MDB2_FETCHMODE_ASSOC | MDB2_FETCHMODE_FLIPPED * @param bool if set to true, the $all will have the first * column as its first dimension * @param bool used only when the query returns exactly * two columns. If true, the values of the returned array will be * one-element arrays instead of scalars. * @param bool if true, the values of the returned array is * wrapped in another array. If the same key value (in the first * column) repeats itself, the values will be appended to this array * instead of overwriting the existing values. * * @return mixed data array on success, a MDB2 error on failure * * @access public * @see getAssoc() */ function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) { $all = array(); $row = $this->fetchRow($fetchmode); if (PEAR::isError($row)) { return $row; } elseif (!$row) { return $all; } $shift_array = $rekey ? false : null; if (!is_null($shift_array)) { if (is_object($row)) { $colnum = count(get_object_vars($row)); } else { $colnum = count($row); } if ($colnum < 2) { return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, 'rekey feature requires atleast 2 column', __FUNCTION__); } $shift_array = (!$force_array && $colnum == 2); } if ($rekey) { do { if (is_object($row)) { $arr = get_object_vars($row); $key = reset($arr); unset($row->{$key}); } else { if ($fetchmode & MDB2_FETCHMODE_ASSOC) { $key = reset($row); unset($row[key($row)]); } else { $key = array_shift($row); } if ($shift_array) { $row = array_shift($row); } } if ($group) { $all[$key][] = $row; } else { $all[$key] = $row; } } while (($row = $this->fetchRow($fetchmode))); } elseif ($fetchmode & MDB2_FETCHMODE_FLIPPED) { do { foreach ($row as $key => $val) { $all[$key][] = $val; } } while (($row = $this->fetchRow($fetchmode))); } else { do { $all[] = $row; } while (($row = $this->fetchRow($fetchmode))); } return $all; } // }}} // {{{ function rowCount() /** * Returns the actual row number that was last fetched (count from 0) * @return int * * @access public */ function rowCount() { return $this->rownum + 1; } // }}} // {{{ function numRows() /** * Returns the number of rows in a result object * * @return mixed MDB2 Error Object or the number of rows * * @access public */ function numRows() { return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function nextResult() /** * Move the internal result pointer to the next available result * * @return true on success, false if there is no more result set or an error object on failure * * @access public */ function nextResult() { return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function getColumnNames() /** * Retrieve the names of columns returned by the DBMS in a query result or * from the cache. * * @param bool If set to true the values are the column names, * otherwise the names of the columns are the keys. * @return mixed Array variable that holds the names of columns or an * MDB2 error on failure. * Some DBMS may not return any columns when the result set * does not contain any rows. * * @access public */ function getColumnNames($flip = false) { if (!isset($this->column_names)) { $result = $this->_getColumnNames(); if (PEAR::isError($result)) { return $result; } $this->column_names = $result; } if ($flip) { return array_flip($this->column_names); } return $this->column_names; } // }}} // {{{ function _getColumnNames() /** * Retrieve the names of columns returned by the DBMS in a query result. * * @return mixed Array variable that holds the names of columns as keys * or an MDB2 error on failure. * Some DBMS may not return any columns when the result set * does not contain any rows. * * @access private */ function _getColumnNames() { return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function numCols() /** * Count the number of columns returned by the DBMS in a query result. * * @return mixed integer value with the number of columns, a MDB2 error * on failure * * @access public */ function numCols() { return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'method not implemented', __FUNCTION__); } // }}} // {{{ function getResource() /** * return the resource associated with the result object * * @return resource * * @access public */ function getResource() { return $this->result; } // }}} // {{{ function bindColumn($column, &$value, $type = null) /** * Set bind variable to a column. * * @param int column number or name * @param mixed variable reference * @param string specifies the type of the field * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function bindColumn($column, &$value, $type = null) { if (!is_numeric($column)) { $column_names = $this->getColumnNames(); if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { if ($this->db->options['field_case'] == CASE_LOWER) { $column = strtolower($column); } else { $column = strtoupper($column); } } $column = $column_names[$column]; } $this->values[$column] =& $value; if (!is_null($type)) { $this->types[$column] = $type; } return MDB2_OK; } // }}} // {{{ function _assignBindColumns($row) /** * Bind a variable to a value in the result row. * * @param array row data * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access private */ function _assignBindColumns($row) { $row = array_values($row); foreach ($row as $column => $value) { if (array_key_exists($column, $this->values)) { $this->values[$column] = $value; } } return MDB2_OK; } // }}} // {{{ function free() /** * Free the internal resources associated with result. * * @return bool true on success, false if result is invalid * * @access public */ function free() { $this->result = false; return MDB2_OK; } // }}} } // }}} // {{{ class MDB2_Row /** * The simple class that accepts row data as an array * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Row { // {{{ constructor: function __construct(&$row) /** * constructor * * @param resource row data as array */ function __construct(&$row) { foreach ($row as $key => $value) { $this->$key = &$row[$key]; } } // }}} // {{{ function MDB2_Row(&$row) /** * PHP 4 Constructor * * @param resource row data as array */ function MDB2_Row(&$row) { $this->__construct($row); } // }}} } // }}} // {{{ class MDB2_Statement_Common /** * The common statement class for MDB2 statement objects * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Statement_Common { // {{{ Variables (Properties) var $db; var $statement; var $query; var $result_types; var $types; var $values = array(); var $limit; var $offset; var $is_manip; // }}} // {{{ constructor: function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) /** * Constructor */ function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) { $this->db =& $db; $this->statement =& $statement; $this->positions = $positions; $this->query = $query; $this->types = (array)$types; $this->result_types = (array)$result_types; $this->limit = $limit; $this->is_manip = $is_manip; $this->offset = $offset; } // }}} // {{{ function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) /** * PHP 4 Constructor */ function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) { $this->__construct($db, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); } // }}} // {{{ function bindValue($parameter, &$value, $type = null) /** * Set the value of a parameter of a prepared query. * * @param int the order number of the parameter in the query * statement. The order number of the first parameter is 1. * @param mixed value that is meant to be assigned to specified * parameter. The type of the value depends on the $type argument. * @param string specifies the type of the field * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function bindValue($parameter, $value, $type = null) { if (!is_numeric($parameter)) { $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter); } if (!in_array($parameter, $this->positions)) { return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); } $this->values[$parameter] = $value; if (!is_null($type)) { $this->types[$parameter] = $type; } return MDB2_OK; } // }}} // {{{ function bindValueArray($values, $types = null) /** * Set the values of multiple a parameter of a prepared query in bulk. * * @param array specifies all necessary information * for bindValue() the array elements must use keys corresponding to * the number of the position of the parameter. * @param array specifies the types of the fields * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public * @see bindParam() */ function bindValueArray($values, $types = null) { $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null); $parameters = array_keys($values); foreach ($parameters as $key => $parameter) { $err = $this->bindValue($parameter, $values[$parameter], $types[$key]); if (PEAR::isError($err)) { return $err; } } return MDB2_OK; } // }}} // {{{ function bindParam($parameter, &$value, $type = null) /** * Bind a variable to a parameter of a prepared query. * * @param int the order number of the parameter in the query * statement. The order number of the first parameter is 1. * @param mixed variable that is meant to be bound to specified * parameter. The type of the value depends on the $type argument. * @param string specifies the type of the field * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function bindParam($parameter, &$value, $type = null) { if (!is_numeric($parameter)) { $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter); } if (!in_array($parameter, $this->positions)) { return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); } $this->values[$parameter] =& $value; if (!is_null($type)) { $this->types[$parameter] = $type; } return MDB2_OK; } // }}} // {{{ function bindParamArray(&$values, $types = null) /** * Bind the variables of multiple a parameter of a prepared query in bulk. * * @param array specifies all necessary information * for bindParam() the array elements must use keys corresponding to * the number of the position of the parameter. * @param array specifies the types of the fields * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public * @see bindParam() */ function bindParamArray(&$values, $types = null) { $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null); $parameters = array_keys($values); foreach ($parameters as $key => $parameter) { $err = $this->bindParam($parameter, $values[$parameter], $types[$key]); if (PEAR::isError($err)) { return $err; } } return MDB2_OK; } // }}} // {{{ function &execute($values = null, $result_class = true, $result_wrap_class = false) /** * Execute a prepared query statement. * * @param array specifies all necessary information * for bindParam() the array elements must use keys corresponding to * the number of the position of the parameter. * @param mixed specifies which result class to use * @param mixed specifies which class to wrap results in * * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure * * @access public */ function &execute($values = null, $result_class = true, $result_wrap_class = false) { if (is_null($this->positions)) { return $this->db->raiseError(MDB2_ERROR, null, null, 'Prepared statement has already been freed', __FUNCTION__); } $values = (array)$values; if (!empty($values)) { $err = $this->bindValueArray($values); if (PEAR::isError($err)) { return $this->db->raiseError(MDB2_ERROR, null, null, 'Binding Values failed with message: ' . $err->getMessage(), __FUNCTION__); } } $result =& $this->_execute($result_class, $result_wrap_class); return $result; } // }}} // {{{ function &_execute($result_class = true, $result_wrap_class = false) /** * Execute a prepared query statement helper method. * * @param mixed specifies which result class to use * @param mixed specifies which class to wrap results in * * @return mixed MDB2_Result or integer on success, a MDB2 error on failure * * @access private */ function &_execute($result_class = true, $result_wrap_class = false) { $this->last_query = $this->query; $query = ''; $last_position = 0; foreach ($this->positions as $current_position => $parameter) { if (!array_key_exists($parameter, $this->values)) { return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); } $value = $this->values[$parameter]; $query.= substr($this->query, $last_position, $current_position - $last_position); if (!isset($value)) { $value_quoted = 'NULL'; } else { $type = !empty($this->types[$parameter]) ? $this->types[$parameter] : null; $value_quoted = $this->db->quote($value, $type); if (PEAR::isError($value_quoted)) { return $value_quoted; } } $query.= $value_quoted; $last_position = $current_position + 1; } $query.= substr($this->query, $last_position); $this->db->offset = $this->offset; $this->db->limit = $this->limit; if ($this->is_manip) { $result = $this->db->exec($query); } else { $result =& $this->db->query($query, $this->result_types, $result_class, $result_wrap_class); } return $result; } // }}} // {{{ function free() /** * Release resources allocated for the specified prepared query. * * @return mixed MDB2_OK on success, a MDB2 error on failure * * @access public */ function free() { if (is_null($this->positions)) { return $this->db->raiseError(MDB2_ERROR, null, null, 'Prepared statement has already been freed', __FUNCTION__); } $this->statement = null; $this->positions = null; $this->query = null; $this->types = null; $this->result_types = null; $this->limit = null; $this->is_manip = null; $this->offset = null; $this->values = null; return MDB2_OK; } // }}} } // }}} // {{{ class MDB2_Module_Common /** * The common modules class for MDB2 module objects * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> */ class MDB2_Module_Common { // {{{ Variables (Properties) /** * contains the key to the global MDB2 instance array of the associated * MDB2 instance * * @var int * @access protected */ var $db_index; // }}} // {{{ constructor: function __construct($db_index) /** * Constructor */ function __construct($db_index) { $this->db_index = $db_index; } // }}} // {{{ function MDB2_Module_Common($db_index) /** * PHP 4 Constructor */ function MDB2_Module_Common($db_index) { $this->__construct($db_index); } // }}} // {{{ function &getDBInstance() /** * Get the instance of MDB2 associated with the module instance * * @return object MDB2 instance or a MDB2 error on failure * * @access public */ function &getDBInstance() { if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { $result =& $GLOBALS['_MDB2_databases'][$this->db_index]; } else { $result =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'could not find MDB2 instance'); } return $result; } // }}} } // }}} // {{{ function MDB2_closeOpenTransactions() /** * Close any open transactions form persistent connections * * @return void * * @access public */ function MDB2_closeOpenTransactions() { reset($GLOBALS['_MDB2_databases']); while (next($GLOBALS['_MDB2_databases'])) { $key = key($GLOBALS['_MDB2_databases']); if ($GLOBALS['_MDB2_databases'][$key]->opened_persistent && $GLOBALS['_MDB2_databases'][$key]->in_transaction ) { $GLOBALS['_MDB2_databases'][$key]->rollback(); } } } // }}} // {{{ function MDB2_defaultDebugOutput(&$db, $scope, $message, $is_manip = null) /** * default debug output handler * * @param object reference to an MDB2 database object * @param string usually the method name that triggered the debug call: * for example 'query', 'prepare', 'execute', 'parameters', * 'beginTransaction', 'commit', 'rollback' * @param string message that should be appended to the debug variable * @param array contains context information about the debug() call * common keys are: is_manip, time, result etc. * * @return void|string optionally return a modified message, this allows * rewriting a query before being issued or prepared * * @access public */ function MDB2_defaultDebugOutput(&$db, $scope, $message, $context = array()) { $db->debug_output.= $scope.'('.$db->db_index.'): '; $db->debug_output.= $message.$db->getOption('log_line_break'); return $message; } // }}} ?>