Manual do PHP
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# imap_ping

(PHP 3, PHP 4 , PHP 5)

imap_ping -- Check if the IMAP stream is still active

## Description

bool imap_ping ( resource imap_stream )

Returns `TRUE` if the stream is still alive, `FALSE` otherwise.

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.

Exemplo 1. imap_ping() Example
`<?php $imap = imap_open("{your.imap.host}", "mailadmin", "password"); // after some sleeping if (!imap_ping($imap)) { // do some stuff to reconnect } ?>`

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