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<?php
/**
 * Piwik - Open source web analytics
 * 
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
 * @version $Id$
 * 
 * @package Piwik_Helper
 */

require_once "Zend/Registry.php"; 

if(!defined('E_STRICT'))            define('E_STRICT', 2048);
if(!defined('E_RECOVERABLE_ERROR')) define('E_RECOVERABLE_ERROR', 4096);
if(!defined('E_EXCEPTION')) 		define('E_EXCEPTION', 8192);

/**
 * Error handler used to display nicely errors in Piwik
 * 
 * @package Piwik_Helper
 */
function Piwik_ErrorHandler($errno, $errstr, $errfile, $errline)
{
	// if the error has been suppressed by the @ we don't handle the error
	if( error_reporting() == 0 )
	{
		return;
	}

	ob_start();
	debug_print_backtrace();
	$backtrace = ob_get_contents();
	ob_end_clean();


	try {
		Zend_Registry::get('logger_error')->log($errno, $errstr, $errfile, $errline, $backtrace);
	}catch(Exception $e){
		// in case the error occurs before the logger creation, we simply display it
		print("<pre>$errstr \nin '$errfile' at the line $errline\n\n$backtrace\n</pre>");
		exit;
	}
	switch($errno)
	{
		case E_ERROR:
		case E_PARSE:
		case E_CORE_ERROR:
		case E_CORE_WARNING:
		case E_COMPILE_ERROR:
		case E_COMPILE_WARNING:
		case E_USER_ERROR:
		case E_EXCEPTION:
			exit;
		break;
		
		case E_WARNING:
		case E_NOTICE:
		case E_USER_WARNING:
		case E_USER_NOTICE:
		case E_STRICT:
		case E_RECOVERABLE_ERROR:
		default:
			// do not exit
		break;
	}
}