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<?php
/**
* Handles error reporting and debugging.
* @package Core
*/
class Debug
{
/**
* An array of logged items
* @var array
* @access public
* @static
*/
public static $logged = array();
/**
* Displays the error page. If you have 'silent_errors' enabled in
* core.php config file, a small message will be shown instead.
*
* @return void
* @access public
*/
public static function render_error($exception)
{
ob_end_clean();
if ($exception->getCode() == 404)
{
$status = '404 Not Found';
}
else
{
$status = '503 Service Temporarily Unavailable';
}
header($_SERVER["SERVER_PROTOCOL"].' '.$status);
header("Status: {$status}");
if (Config::get('core.errors.silent', false))
{
echo $status;
return;
}
$view = View::get('debug');
$view->exception = $exception;
$view->log = Debug::$logged;
echo $view->render();
}
/**
* Catches errors and exceptions and sends them
* to the configured handler if one is present,
* otherwise render_error() will be called.
*
* @param Exception $exception Caught exception
* @return void
* @access public
* @static
*/
public static function onError($exception)
{
set_exception_handler(array('Debug', 'internalException'));
set_error_handler(array('Debug', 'internalError'), E_ALL);
$handler = Config::get('core.errors.handler', 'Debug::render_error');
call_user_func($handler, $exception);
}
/**
* Converts PHP Errors to Exceptions
*
* @param string $errno Error number
* @param string $errstr Error message
* @param string $errfile File in which the error occurred
* @param string $errline Line at which the error occurred
* @return void
* @access public
* @throws ErrorException Throws converted exception to be immediately caught
* @static
*/
public static function errorHandler($errno, $errstr, $errfile, $errline)
{
throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
}
/**
* Handles exceptions that occurred while inside the error handler. Prevents recursion.
*
* @param Exception $exception Caught exception
* @return void
* @access public
* @static
*/
public static function internalException($exception)
{
echo $exception->getMessage().' in '.$exception->getFile().' on line '.$exception->getLine();
}
/**
* Handles errors that occurred while inside the error handler. Prevents recursion.
*
* @param string $errno Error number
* @param string $errstr Error message
* @param string $errfile File in which the error occurred
* @param string $errline Line at which the error occurred
* @return void
* @access public
* @static
*/
public static function internalError($errno, $errstr, $errfile, $errline)
{
echo $errstr.' in '.$errfile.' on line '.$errline;
}
/**
* Initializes the error handler
*
* @return void
* @access public
* @static
*/
public static function init()
{
set_exception_handler(array('Debug', 'onError'));
set_error_handler(array('Debug', 'errorHandler'), E_ALL);
}
/**
* Adds an item to the log.
*
* @param mixed $val Item to be logged
* @return void
* @access public
* @static
*/
public static function log($val)
{
array_unshift(Debug::$logged, $val);
}
}
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