_checkDelExpect example

    function delExpect($error_code)
    {
        $deleted = false;
        if ((is_array($error_code) && (0 != count($error_code)))) {
            // $error_code is a non-empty array here; we walk through it trying             // to unset all values             foreach ($error_code as $key => $error) {
                $deleted =  $this->_checkDelExpect($error) ? true : false;
            }

            return $deleted ? true : PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME         } elseif (!empty($error_code)) {
            // $error_code comes alone, trying to unset it             if ($this->_checkDelExpect($error_code)) {
                return true;
            }

            return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME         }