http_cache_etag

Opis

Attempts to cache the sent entity by its ETag, either supplied or generated by the hash algorithm specified by the INI setting http.etag.mode.

If the clients If-None-Match header matches the supplied/calculated ETag, the body is considered cached on the clients side and a 304 Not Modified status code is issued.

A log entry is written to the cache log if the ustawienia INI http.log.cache is set and the cache attempt was successful.

Parametry

Zwracane wartości

Returns FALSE on failure, or exits with 304 Not Modified if the entity is cached.