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<?php
/**
 * Customize error renderer with default PEAR_Error object
 * and PEAR::Log (db handler, mysql driver).
 *
 * PHP versions 4 and 5
 *
 * @category HTML
 * @package HTML_CSS
 * @subpackage Examples
 * @author Klaus Guenther <klaus@capitalfocus.org>
 * @author Laurent Laville <pear@laurent-laville.org>
 * @copyright 2005-2009 Klaus Guenther, Laurent Laville
 * @license http://www.opensource.org/licenses/bsd-license.php BSD
 * @version CVS: $Id: css_error_logger.php,v 1.9 2009/01/19 23:22:39 farell Exp $
 * @link http://pear.php.net/package/HTML_CSS
 * @since File available since Release 1.0.0RC1
 * @ignore
 */

require_once 'HTML/CSS.php';
require_once 'PEAR.php';
require_once 'Log.php';

/**
 * Determine whether to display or log an error.
 *
 * @param object $css_error instance of HTML_CSS_Error
 *
 * @return  void
 * @ignore
 */
function myErrorCallback($css_error)
{
    $display_errors = ini_get('display_errors');
    $log_errors     = ini_get('log_errors');

if ($display_errors) {
 printf('HTML_CSS error : %s ', $css_error->getMessage());
 }

if ($log_errors) {
        $userinfo = $css_error->getUserInfo();

$lineFormat    = '%1$s %2$s';
        $contextFormat = '(Function="%3$s" File="%1$s" Line="%2$s")';

$options  =& $userinfo['log']['sql'];
        $db_table =& $options['name'];
        $ident    =& $options['ident'];
        $conf     =& $options['conf'];

if (isset($conf['lineFormat'])) {
            $lineFormat = $conf['lineFormat'];
        }
        if (isset($conf['contextFormat'])) {
            $contextFormat = $conf['contextFormat'];
        }

$logger = &Log::singleton('sql', $db_table, $ident, $conf);

$msg     = $css_error->getMessage();
        $ctx     = $css_error->sprintContextExec($contextFormat);
        $message = sprintf($lineFormat, $msg, $ctx);

switch ($userinfo['level']) {
        case 'exception':
            $logger->alert($message);
            break;
        case 'error':
            $logger->err($message);
            break;
        case 'warning':
            $logger->warning($message);
            break;
        default:
            $logger->notice($message);
        }
    }
}

/**
 * Replace default internal error handler.
 *
 * Always returns error, but do nothing
 *
 * @return  null
 * @ignore
 */
function myErrorHandler()
{
    // always returns error; do not halt script on exception
    return null;
}

ini_set('display_errors', 1);
ini_set('log_errors', 1);

// Example A. ---------------------------------------------

PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'myErrorCallback');

$dbms     = 'mysql';     // your database management system
$db_user  = 'root';      // your database user account
$db_pass  = '****';      // your database user-password account
$db_name  = 'test';      // your database name
$db_table = 'log_table'; // your database log table

/**
 * CREATE TABLE log_table (
 *  id          INT NOT NULL,
 *  logtime     TIMESTAMP NOT NULL,
 *  ident       CHAR(16) NOT NULL,
 *  priority    INT NOT NULL,
 *  message     VARCHAR(255),
 *  PRIMARY KEY (id)
 * );
 */

$options     = array(
    'dsn' => "$dbms://$db_user:$db_pass@/$db_name",
    'contextFormat' => '[File="%1$s" Line="%2$s"]'
);
$sql_handler = array('name' => $db_table,
                     'ident' => 'HTML_CSS',
                     'conf' => $options
                     );
$logConfig   = array('sql' => $sql_handler);

$prefs   = array(
    'push_callback' => 'myErrorHandler',
    'handler' => array('log' => $logConfig)
);
$attribs = array();

$css1 = new HTML_CSS($attribs, $prefs);

// A1. Error
$group1 = $css1->createGroup('body, html', 'grp1');
$group2 = $css1->createGroup('p, html', 'grp1');

// A2. Error
$css1->getStyle('h1', 'class');

// A3. Exception
$css1->setXhtmlCompliance('true');

$msg = " <hr/>";
$msg .= "Previous errors has been recorded in database '$db_name'," .
 " table '$db_table'";
echo "$msg ";

print 'still alive !';
?>