declare wrapper operations declare wrapper instance register (and unregister!) with the streams layer Let's replace the %example_open()% function with a wrapper so that %fopen("example:///path/to/file")% does the same job. php_stream_wrapper_ops example_wops = { example_opener, /* stream_opener */ NULL, /* stream_closer hook */ NULL, /* fstat hook */ NULL, /* stat hook */ NULL, /* diropen()er */, "example wrapper" }; php_stream_wrapper example_wrapper = { &example_wops, /* bind the methods to the instance */ NULL, /* no wrapper instance specific data */ 0, /* not a url that requires network access */ };