http_cache_etag()

http_cache_etag - Caching by ETag

Syntax

bool http_cache_etag (string $etag)

Arguments

• etag - custom ETag

Description

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.

Version

PHP PECL pecl_http >= 0.1.0

Return value

Returns FALSE or exitson success with 304 Not Modifiedif the entity is cached. See the INI setting http.force_exitfor what "exits" means.