struct _php_stream_wrapper {
php_stream_wrapper_ops *wops; /* operations the wrapper can perform */
void *abstract; /* context for the wrapper */
int is_url; /* so that PG(allow_url_fopen) can be respected */
/* support for wrappers to return (multiple) error messages to the stream opener */
int err_count;
char **err_stack;
} php_stream_wrapper;