From: flobee at gmail dot com
Operating system: debian testing
PHP version: 5.5.5
Package: *General Issues
Bug Type: Bug
Bug description:destruction problem
Description:
------------
calling methodes on destruction is difficult to understand when using
singelton patterns which does not make sence for me. maybe i'm wrong..
i'm not sure at the moment...
also: if session is used this fails on destruction
see script below for a simple test
i expect the call of knock() from master class on destruction of class
b.
when not using singelton patter all is fine. the order of the
destruction works.
this problems starts with php 5.5* packages in debian testing.
$ uname -a
Linux d1 3.10-3-686-pae #1 SMP Debian 3.10.11-1 (2013-09-10) i686
GNU/Linux
$ php -v
PHP 5.5.5-1 (cli) (built: Oct 19 2013 22:09:48)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies
with Zend OPcache v7.0.3-dev, Copyright (c) 1999-2013, by Zend
Technologies
with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
Test script:
---------------
<?php
error_reporting( -1);
session_start();
interface Singleton_Interface
{
public static function getInstance();
}
abstract class Singleton implements Singleton_Interface
{
public function __clone()
{
throw new Exception( 'Clone is not allowed.' );
}
}
class master extends Singleton implements Singleton_Interface
{
private $r;
private static $instance;
public static function getInstance( $params=array( ) )
{
if( !isset(self::$instance) ) {
$c = __CLASS__;
self::$instance = new $c($params);
}
return self::$instance;
}
public function knock()
{
echo 'call ' . __METHOD__ . PHP_EOL;
}
public function __construct($r=false)
{
$this->r = $r;
echo __METHOD__ . PHP_EOL;
}
public function __destruct()
{
echo __METHOD__ . PHP_EOL;
if (method_exists($this->r, 'knock')) {
$this->r->knock();
}
$_SESSION['x'] = __METHOD__;
}
}
class b extends Singleton implements Singleton_Interface
{
private $r;
private static $instance;
public static function getInstance( $params=array( ) )
{
if( !isset(self::$instance) ) {
$c = __CLASS__;
self::$instance = new $c($params);
}
return self::$instance;
}
public function knock()
{
echo 'call ' . __METHOD__ . PHP_EOL;
}
public function __construct($r=false)
{
$this->r = $r;
echo __METHOD__ . PHP_EOL;
}
public function __destruct()
{
echo __METHOD__ . PHP_EOL;
if (method_exists($this->r, 'knock')) {
$this->r->knock();
}
$_SESSION['y'] = __METHOD__;
}
}
header( 'content-type: text/plain' );
echo 'session:'; print_r($_SESSION);
$master = master::getInstance();
$b = b::getInstance($master); // calls master->knock() on destruction
$master->knock();
$b->knock();
echo 'done' . PHP_EOL;
Actual result:
--------------
/* result:
master::__construct
b::__construct
call master::knock
call b::knock
done
master::__destruct
b::__destruct
call master::knock <------ no error?
_session is empty! correct? wrong?
*/
--
Edit bug report at https://bugs.php.net/bug.php?id=66023&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=66023&r=trysnapshot54
Try a snapshot (PHP 5.5):
https://bugs.php.net/fix.php?id=66023&r=trysnapshot55
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=66023&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=66023&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=66023&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=66023&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=66023&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=66023&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=66023&r=support
Expected behavior: https://bugs.php.net/fix.php?id=66023&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=66023&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=66023&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=66023&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66023&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=66023&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=66023&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=66023&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=66023&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=66023&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=66023&r=mysqlcfg
