struct php_stream_wrapper_ops

typedef struct _php_stream_wrapper_ops {
            /* open/create a wrapped stream */
            php_stream *(*stream_opener)(php_stream_wrapper *wrapper, char *filename, char *mode,
                    int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);
            /* close/destroy a wrapped stream */
            int (*stream_closer)(php_stream_wrapper *wrapper, php_stream *stream TSRMLS_DC);
            /* stat a wrapped stream */
            int (*stream_stat)(php_stream_wrapper *wrapper, php_stream *stream, php_stream_statbuf *ssb TSR$
            /* stat a URL */
            int (*url_stat)(php_stream_wrapper *wrapper, char *url, php_stream_statbuf *ssb TSRMLS_DC);
            /* open a "directory" stream */
            php_stream *(*dir_opener)(php_stream_wrapper *wrapper, char *filename, char *mode,
                    int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);

            const char *label;

            /* Delete/Unlink a file */
            int (*unlink)(php_stream_wrapper *wrapper, char *url, int options, php_stream_context *context TSRMLS_DC);
        } php_stream_wrapper_ops;