From: zlobnygrif at gmail dot com
Operating system: debian/ubuntu
PHP version: 5.4.17
Package: *General Issues
Bug Type: Bug
Bug description:Memory leak when initializing objects
Description:
------------
If I set object property run-time it uses more memory than equal default
property value.
Test script:
---------------
printf("PHP %s %s\n\n", PHP_VERSION, PHP_OS);
class Order {
public $id = '123';
public $number = '1234';
public $date = '12345';
}
$orders = [];
printf("Test1\nMem before: %.2f mb\n", memory_get_usage(true) / 1024 /
1024);
for ( $i = 0; ++$i < 100000; )
{
$order = new Order;
$orders[] = $order;
}
printf("Mem after: %.2f mb\n\n", memory_get_usage(true) / 1024 / 1024);
unset($orders, $i);
$orders = [];
printf("Test2\nMem before: %.2f mb\n", memory_get_usage(true) / 1024 /
1024);
for ( $i = 0; ++$i < 100000; )
{
$order = new Order;
$orders[] = $order;
}
printf("Mem after: %.2f mb\n\n", memory_get_usage(true) / 1024 / 1024);
unset($orders, $i);
$orders = [];
printf("Test3\nMem before: %.2f mb\n", memory_get_usage(true) / 1024 /
1024);
for ( $i = 0; ++$i < 100000; )
{
$order = new Order;
$order->id = '123';
$order->number = '12345';
$order->date = '123456';
$orders[] = $order;
}
printf("Mem after: %.2f mb\n\n", memory_get_usage(true) / 1024 / 1024);
unset($orders, $i);
printf("Mem after: %.2f mb\n\n", memory_get_usage(true) / 1024 / 1024);
Expected result:
----------------
no memory leaks
Actual result:
--------------
PHP 5.4.17-1~dotdeb.0 Linux
Test1
Mem before: 0.25 mb
Mem after: 16.25 mb
Test2
Mem before: 4.75 mb
Mem after: 16.25 mb
Test3
Mem before: 5.00 mb
Mem after: 24.25 mb
Mem after: 5.25 mb
--
Edit bug report at https://bugs.php.net/bug.php?id=65300&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=65300&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=65300&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=65300&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=65300&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=65300&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=65300&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=65300&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=65300&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=65300&r=support
Expected behavior: https://bugs.php.net/fix.php?id=65300&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=65300&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=65300&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=65300&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65300&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=65300&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=65300&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=65300&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=65300&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=65300&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=65300&r=mysqlcfg
