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imap_gc

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

imap_gcClears 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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User Contributed Notes 1 note

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Anonymous
14 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.
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