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This document uses PHP Chinese website manual Release
(PECL pecl_http >= 0.10.0)
HttpResponse::setCacheControl — Set cache control
$control
[, int $max_age
= 0
[, bool $must_revalidate
= true
]] )Define a custom Cache-Control header, usually being private or public;
control
the primary cache control setting
max_age
the max-age in seconds, suggesting how long the cache entry is valid on the client side
must_revalidate
whether the cached entity should be revalidated by the client for every request
Returns TRUE
on success, or FALSE
if control does not match one of public, private or no-cache.