imap_ping

    (PHP 4, PHP 5, PHP 7, PHP 8)

    imap_ping — Check if the IMAP stream is still active

    说明

    imap_ping(IMAP\Connection$imap): bool

    imap_ping() pings the stream to see if it's still active. It may discover new mail; this is the preferred method for a periodic "new mail check" as well as a "keep alive" for servers which have inactivity timeout.

    参数

    imap

    IMAP\Connection 实例。

    返回值

    Returns true if the stream is still alive, false otherwise.

    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 imapresource。

    示例

    示例 #1 imap_ping() Example

    <?php

    $imap     = imap_open("{imap.example.org}", "mailadmin", "password");

    // after some sleeping
    if (!imap_ping($imap)) {
    // do some stuff to reconnect
    }

    ?>
    To Top