imap_gc

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

imap_gc — Clears IMAP cache

说明

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

Purges the cache of entries of a specific type.

参数

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).

返回值

总是返回 true。

错误／异常

Throws a ValueError if flags is invalid.

更新日志

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

示例 #1 imap_gc() example

<?php

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

imap_gc($mbox, IMAP_GC_ELT);

?>

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Anonymous ¶

15 years ago

If you notice that you're program's memory usage is increasing (as observed using ps) while calling the imap functions, calling this function should free that memory.