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.
(PHP 5 >= 5.3.0, PHP 7)
imap_gc — Clears IMAP cache
$imap_stream
, int $caches
)Purges the cache of entries of a specific type.
imap_stream
imap_open()이 반환한 IMAP 스트림입니다.
caches
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).
성공 시 TRUE
를, 실패 시 FALSE
를 반환합니다.
Example #1 imap_gc() example
<?php
$mbox = imap_open("{imap.example.org:143}", "username", "password");
imap_gc($mbox, IMAP_GC_ELT);
?>