From: rodricg at sellingsource dot com
Operating system: linux
PHP version: 5.2.9
PHP Bug Type: Class/Object related
Bug description: value returned from __call copied prematurely
Description:
------------
Values returned from the magic __call method are copied immediately
resulting in increased memory usage.
Reproduce code:
---------------
<?php
function mem($msg='') { echo ($msg ? $msg.": " :
'').number_format(memory_get_usage(1))."\n"; }
class A
{
public $str;
public function __construct() { $this->str = str_repeat("a", 1000000);
}
public function __call($m, $a) {return $this->str;}
public function getStr() {return $this->str;}
}
$a = new A(); mem('new A()');
$b = $a->str; mem('$a->str');
$c = $a->getStr(); mem('$a->getStr()');
$d = $a->magic(); mem('$a->magic()');
?>
Expected result:
----------------
new A(): 1,310,720
$a->str: 1,310,720
$a->getStr(): 1,310,720
$a->magic(): 1,310,720
Actual result:
--------------
new A(): 1,310,720
$a->str: 1,310,720
$a->getStr(): 1,310,720
$a->magic(): 2,359,296
--
Edit bug report at http://bugs.php.net/?id=47525&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47525&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47525&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47525&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47525&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47525&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47525&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47525&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47525&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47525&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47525&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47525&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47525&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47525&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47525&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47525&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47525&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47525&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47525&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47525&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47525&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47525&r=mysqlcfg
