From:
Operating system: all
PHP version: 5.4.0RC7
Package: Scripting Engine problem
Bug Type: Bug
Bug description:Memory is not properly freed
Description:
------------
Memory is not being freed properly. In a short loop several megabytes are
lost that should not be lost. Attached is a test script to demonstrate what
I mean.
Test script:
---------------
$mem1 = memory_get_usage(true);
echo "MEM1: " . $mem1 . "\n";
class A {
public $class;
}
$c1 = $c2 = null;
for ($i = 0; $i < 20000; $i++) {
$c1 = new A();
$c2 = new A();
$c1->class = array($c1, $c2);
$c2->class = array($c1, $c2);
}
unset($c1); unset($c2);
gc_collect_cycles();
$mem2 = memory_get_usage(true);
echo "MEM2: " . $mem2 . "\n";
echo "DIFF: " . ($mem2 - $mem1) . "\n";
Expected result:
----------------
I expect the memory difference to be 0. In this case it is several
megabytes.
Actual result:
--------------
MEM1: 4980736
MEM2: 7340032
DIFF: 2359296
The DIFF should be 0.
--
Edit bug report at https://bugs.php.net/bug.php?id=60983&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=60983&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=60983&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=60983&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=60983&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=60983&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=60983&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=60983&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=60983&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=60983&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=60983&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=60983&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=60983&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=60983&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=60983&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=60983&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=60983&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=60983&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=60983&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=60983&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=60983&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=60983&r=mysqlcfg
