Edit report at http://bugs.php.net/bug.php?id=52536&edit=1
ID: 52536 User updated by: aikar at aikar dot co Reported by: aikar at aikar dot co Summary: array_shift memory leak. -Status: Open +Status: Closed Type: Bug Package: Performance problem Operating System: CentOS 5.3 PHP Version: 5.3.3 Block user comment: N New Comment: Sorry, upon furthur review i noticed the memory does stop rising eventually, and found my memory "leak" to be a flaw somewhere else that took it up high. closing since this isnt a bug. Previous Comments: ------------------------------------------------------------------------ [2010-08-04 22:43:22] aikar at aikar dot co Description: ------------ array_shift is causing a memory leak when used. Take the following code: if (count($write->writeBuffer)) { $data = array_shift($write->writeBuffer); $written = fwrite($stream, $data); if ($written !== FALSE) { if ($written < strlen($data)) { array_unshift($write->writeBuffer, substr($data, $written)); } } } When running under as a daemon process, memory will continue to rise with this code. However, simply changing the code to: if (count($write->writeBuffer)) { //print_r($write); $data = reset($write->writeBuffer); $key = key($write->writeBuffer); //echo "writing data: $data\n"; $written = fwrite($stream, $data); if ($written !== FALSE) { if ($written < strlen($data)) { $write->writeBuffer[$key] = substr($data, $written); } else { unset($write->writeBuffer[$key]); } } } Fixes the problem and no longer leaks and stays at a steady number. Test script: --------------- requires a long running process that repeatedly calls array_shift to demonstrate Expected result: ---------------- Memory to be freed that is used for the array_shift operation. Actual result: -------------- Memory is not freed upon use and contiously climbs in total memory consumption by the PHP process. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52536&edit=1