From:
Operating system: Fedora 12
PHP version: 5.3.3
Package: Class/Object related
Bug Type: Bug
Bug description:Recursive References Leak Memory
Description:
------------
The behavior originally reported in #33595 still exists, namely, "Objects
with recursive references leak memory."
Test script:
---------------
class A {
function __construct () {
$this->b = new B($this);
}
}
class B {
function __construct ($parent = NULL) {
$this->parent = $parent;
}
}
echo memory_get_usage() . "\n";
for ($i = 0 ; $i < 1000000 ; $i++) {
$a = new A();
}
echo memory_get_usage() . "\n";
Expected result:
----------------
Memory usage should remain relatively constant. For example, if you change
the one line to:
"$this->parent = clone $parent;"
Then the output is:
632216
632392
Actual result:
--------------
Memory usage increases with each newly instantiated object.
Actual output:
631976
1756792
--
Edit bug report at http://bugs.php.net/bug.php?id=52902&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=52902&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=52902&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=52902&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=52902&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=52902&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=52902&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=52902&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=52902&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=52902&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=52902&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=52902&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=52902&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=52902&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=52902&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52902&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52902&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=52902&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=52902&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=52902&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=52902&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=52902&r=mysqlcfg
