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    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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    User Contributed Notes 1 note

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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.
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