public static function lowerCase(&$value, &$key)
    {
        trigger_error(__CLASS__ . '::' . __METHOD__ . '() is deprecated and will be removed in a future version', E_USER_NOTICE);
        return $value = strtolower($value);
    }
public static function lowerCase(&$value, &$key)
    {
        trigger_error(__CLASS__ . '::' . __METHOD__ . '() is deprecated and will be removed in a future version', E_USER_NOTICE);
        return $value = strtolower($value);
    }
public static function lowerCase ( & $ value , & $ key ) { trigger_error ( __CLASS__ . '::' . __METHOD__ . '() is deprecated and will be removed in a future version' , E_USER_NOTICE ) ; return $ value = strtolower ( $ value ) ; }
Lowercase a string

Lowercase's a string by reference

@deprecated
@param  string $string value
@param  string $key
@return string Lower cased string
Lowercase a string