Req #33487 [Asn->Opn]: Memory allocated for objects created in object methods is not released

Edit report at https://bugs.php.net/bug.php?id=33487&edit=1 ID: 33487 Updated by: kalle@php.net Reported by: robert dot munteanu at betbrain dot com Summary: Memory allocated for objects created in object methods is not released -Status: Assigned +Status: Open Type: Feature/Change Request Package: Scripting Engine problem Operating System: * PHP Version: * -Assigned To: dmitry +Assigned To: Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2015-05-10 04:28:29] requinix@php.net Related To: Bug #69615 ------------------------------------------------------------------------ [2014-08-27 10:00:27] nikic@php.net In PHP 7 the object store is just a ptr array, so the overhead here reduces to sizeof(void *) * max_number_of_objects. This should reduce the memory usage of the object store by a factor of 8 on both 32bit and 64bit. ------------------------------------------------------------------------ [2014-08-27 06:16:48] dmitry@php.net This is not a bug, and it's not fixed. ------------------------------------------------------------------------ [2014-08-26 18:55:41] chrisdmiddleton at gmail dot com Has this bug been fixed in PHP 5.*? ------------------------------------------------------------------------ [2006-01-26 19:56:32] nick at mythgaming dot net Note that the memory is freed inside php, just not yielded back to the operating system until execution ends. In this example, the memory is claimed as the function executes, then re-used when the function is run again (instead of using up twice as much memory): ---------- <?php function doNothing() { $res = array(); for ( $i = 0; $i < 20000; $i++) { $res[$i] = new StdClass; } } // Unix only function get_usage() { $my_pid = getmypid(); $usage = ps -eo%mem,rss,pid | grep $my_pid; $kb = preg_split("/\s+/", $usage); return sprintf("%.3f",$kb[2] / 1024) . "MB"; } echo "Before: ".get_usage()."\n"; doNothing(); echo "One Use: ".get_usage()."\n"; doNothing(); echo "Two Uses: ".get_usage()."\n"; ?> Output ------ Before: 5.555MB One Use: 10.164MB Two Uses: 10.293MB ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=33487 -- Edit this bug report at https://bugs.php.net/bug.php?id=33487&edit=1