imap_gc

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

imap_gc — Clears IMAP cache

imap_gc(IMAP\Connection $imap, int $flags): true

Purges the cache of entries of a specific type.

imap: IMAP\Connection 实例。
flags: Specifies the cache to purge. It may one or a combination of the following constants: IMAP_GC_ELT (message cache elements), IMAP_GC_ENV (envelope and bodies), IMAP_GC_TEXTS (texts).

总是返回 true。

Throws a ValueError if flags is invalid.

版本	说明
8.1.0	现在 `imap` 参数接受 IMAP\Connection 实例，之前接受有效的 `imap` resource。
8.0.0	A ValueError is now thrown on invalid `flags` parameter values. Previously, a warning was emitted and the function returned `false`.

示例 #1 imap_gc() example

<?php

$mbox = imap_open("{imap.example.org:143}", "username", "password");

imap_gc($mbox, IMAP_GC_ELT);

?>