#47000 [Com]: imap_body() and imap_savebody() memory leak.

ID: 47000 Comment by: alan at binarystars dot com Reported By: alan at binarystars dot com Status: Feedback Bug Type: IMAP related Operating System: 2.6.25-14.fc9.i686 PHP Version: 5.2.8 New Comment: iliaa at php.net, Give me a moment to update. Thanks. Previous Comments: ------------------------------------------------------------------------ [2009-01-05 16:01:47] iliaa@php.net Can you run it via valgrind rather then php's memory checker? I suspect the issue is just some temp vars that will be cleaned up by garbage collection. ------------------------------------------------------------------------ [2009-01-04 21:31:09] alan at binarystars dot com Description: ------------ # Problem: imap_body() and imap_savebody() memory leak. During the following test of 26 email messages totaling a sum of 244.05Mb it seems you need TWICE the amount of memory in order to receive the message body via imap_body(). When using the imap_savebody() func it seems you need approximately the same amount of memory as the email message itself. The problem in particular is repeatable in any size email message... even when you unset the variables/objects returned by the func. In other words, you want to receive a message body of 5Mb using imap_body() func; you'll need 10Mb of available free RAM just to store the message body to a variable. Now, say you receive 10 messages each at 5Mb, and unset all the variables. That would mean you'll need 100Mb of free memory to read all ten messages. See the reproduced code and the results for more information. # Question: Is there a way to flush the memory without actually exiting out of the script? Reproduce code: --------------- Colorized version: http://home.binarystars.com/~alan/imap_bug/test.html (30k) Text version: http://home.binarystars.com/~alan/imap_bug/test.txt (5.3k) Result of method 1 via imap_body(): http://home.binarystars.com/~alan/imap_bug/method1_results.txt (3.6k) Result of method 2 via imap_savebody(): http://home.binarystars.com/~alan/imap_bug/method2_results.txt Expected result: ---------------- When I run the script I expect it to use less (RSS) resident memory. Actual result: -------------- Instead of freeing up memory the script takes up more than Oracle running five hundred databases. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47000&edit=1