54      * @param   string  $protocol     The wrapper name to be registered.
62     public static function register($protocol, $className, $flags = 0)  argument
64         if (true === self::isRegistered($protocol)) {
68                 $protocol
77                 [$className, $protocol]
81         return stream_wrapper_register($protocol, $className, $flags);
87      * @param   string  $protocol    The wrapper name to be unregistered.
90     public static function unregister($protocol)  argument
95         return @stream_wrapper_unregister($protocol);
101      * @param   string  $protocol    The wrapper name to be restored.
104     public static function restore($protocol)  argument
109         return @stream_wrapper_restore($protocol);
115      * @param   string  $protocol    Protocol name.
118     public static function isRegistered($protocol)  argument
120         return in_array($protocol, self::getRegistered());