ID: 47940
User updated by: jake dot levitt at mailtrust dot com
Reported By: jake dot levitt at mailtrust dot com
Status: Open
Bug Type: IMAP related
Operating System: Ubuntu 8.04 (linux:2.6.24-21)
PHP Version: 5.2.9
New Comment:
I have now confirmed that this bug also exists in PHP version 5.3.0RC1
on CentOs 5.1.
Previous Comments:
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[2009-04-09 22:31:04] jake dot levitt at mailtrust dot com
Description:
------------
I am creating a script that migrates e-mail from one server to another.
On really large mailboxes, my script dies with "PHP Fatal error: Out
of memory (allocated 13631488) (tried to allocate 3381512 bytes)" even
though memory_get_usage() function was reporting that the script was
only using around 10 MBs. My memory_limit is set to 1GB (but this isn't
coming into play). When I examined the memory usage of the script using
ps, I noticed that it would gradually increase until it reached ~92% of
system memory (I have 2GB). I eventually found that when I commented
out imap_body, the memory usage would stay flat. I wrote a script that
can reproduce this bug. I run the script in the background and then
watch its memory using: ps -eo pid,ppid,rss,vsize,pcpu,pmem,cmd -ww
--sort=pid | grep "\(memory-usage\)\|\(PID\)" | grep -v grep. Please
let me know if you need additional information. This script is intended
to be run on the cli.
Reproduce code:
---------------
<?php
$flags = '/novalidate-cert';
$host = 'mail.server.com:143';
$username = 'user';
$password = 'pass';
$folder = 'INBOX';
$base_imap_string = '{' . $host . $flags . '}';
$connect_string = $base_imap_string . $folder;
$mailbox = @imap_open($connect_string, $username, $password, 0, 3);
$reopen_success = imap_reopen($mailbox, $connect_string, 0, 3);
$message_ids = imap_search($mailbox, "ALL", SE_UID);
for ($i = 0; $i < 10000000; $i++) {
imap_body($mailbox, $message_ids[0], FT_UID | FT_PEEK);
}
Expected result:
----------------
I would expect that memory usage as viewed by the ps command stays
relatively flat.
Actual result:
--------------
Memory usage as viewed by the ps command increases over time until the
script eventually dies with an "out of memory" error given.
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Edit this bug report at http://bugs.php.net/?id=47940&edit=1
