public function __construct($message = '', $code = 'UNKNOWN', Exception $previous = null) { $keys = self::getCodeKeys(); if (in_array($code, $keys)) { $code = array_search($code, $keys); } else { if (isset($keys[$code])) { // Ok } else { if (is_numeric($code)) { $code = (int) $code; } else { $code = 0; } } } parent::__construct($message, $code, $previous); }