From: patrick at factorylabs dot com
Operating system: Windows
PHP version: 5.1.4
PHP Bug Type: Scripting Engine problem
Bug description: scope of static variable in class member function exists in
all object instance
Description:
------------
Given a member function of a class that has a static variable; the value
of the static variable, when changed, is propagated to all object
instances of the class. (note: may be a duplicate of #16245)
The code below is strictly intended to demonstrate this issue (having a
static variable in a constructor is pointless).
Note that removing the static key word from the $bSwitch declaration
causes the $bSwitch variable to operate with a scope that is unique to the
instance of the class.
Reproduce code:
---------------
define('endl', "\n");
class CMyWidget {
public function __construct() {
static $bSwitch = false;
echo '$bSwitch = ' . ($bSwitch ? 'true' : 'false') . endl;
if($bSwitch === false)
$bSwitch = true;
}
}
$oTest1 = new CMyWidget();
$oTest2 = new CMyWidget();
Expected result:
----------------
$bSwitch = false
$bSwitch = false
Actual result:
--------------
$bSwitch = false
$bSwitch = true
--
Edit bug report at http://bugs.php.net/?id=37383&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=37383&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=37383&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=37383&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=37383&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=37383&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=37383&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=37383&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=37383&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=37383&r=support
Expected behavior: http://bugs.php.net/fix.php?id=37383&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=37383&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=37383&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=37383&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=37383&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=37383&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=37383&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=37383&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=37383&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=37383&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=37383&r=mysqlcfg
