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PHP5中文手册
imap_ping(PHP 4, PHP 5) imap_ping — Check if the IMAP stream is still active 说明
bool imap_ping
( resource $imap_stream
)
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. 返回值Returns TRUE if the stream is still alive, FALSE otherwise. 范例
Example#1 imap_ping() Example
<?php |