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() function pings the stream to see it is 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. (As PHP scripts do not tend to run that long, I can hardly imagine that this function will be useful to anyone.)

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imap_open | Acima | imap_qprint