From: arend at auton dot nl
Operating system: Linux
PHP version: 5.0.2
PHP Bug Type: Zend Engine 2 problem
Bug description: Static functions called from a destructor don't have access to the
object
Description:
------------
If you use singleton classes, it is often handy to have one global
instance of your class and manipulate this instance using static
functions. Then it can also be handy to call such a static function for
cleanup purposes inside the destructor. However, if the object is cleaned
up using unset(), the static functions lose access to the global instance
before the destructor is finished. If the instance just runs out of scope,
it works normally however.
Btw, this bug seems somewhat similar to Bug #29685 in which it also
appears the destructor is called too late with a singleton pattern, with
the exception that this code does not have a private instance and simply
uses a global instance.
Reproduce code:
---------------
class Test
{
public function __construct() { $this->a = "test"; }
public function __destruct() { self::printA(); }
static public function printA() { global $test; echo "$test->a\n";
}
private $a;
}
$test = new Test;
unset($test);
Expected result:
----------------
It should print: "test".
Actual result:
--------------
It prints nothing.
--
Edit bug report at http://bugs.php.net/?id=30447&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30447&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30447&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30447&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=30447&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=30447&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=30447&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=30447&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=30447&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=30447&r=support
Expected behavior: http://bugs.php.net/fix.php?id=30447&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=30447&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=30447&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=30447&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30447&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=30447&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=30447&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=30447&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=30447&r=float
MySQL Configuration Error: http://bugs.php.net/fix.php?id=30447&r=mysqlcfg
