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http_cache_last_modified> <HTTP Funkcje
Last updated: Fri, 10 Oct 2008

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http_cache_etag

(PECL pecl_http:0.1.0-1.5.5)

http_cache_etagCaching by ETag

Opis

bool http_cache_etag ([ string $etag ] )

Attempts to cache the sent entity by its ETag, either supplied or generated by the hash algorithm specified by the ustawienia INI 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.

Informacja: Ta funkcja może być użyta w powiązaniu z http_send_data(), http_send_file() i http_send_stream().

If this function is used outside the http_send_*() API, it facilitates the ob_etaghandler().

Parametry

etag

custom ETag

Zwracane wartości

Zwraca FALSE lub exist w przypadku sukcesu with 304 Not Modified if the entity is cached. Patrz ustawienia INI http.force_exit co znaczą "exist".

Przykłady

Example #1 A http_cache_etag() example

<?php
http_cache_etag
();
http_send_data("data");
?>

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http_cache_last_modified> <HTTP Funkcje
Last updated: Fri, 10 Oct 2008
 
 
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