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Bug #29756 __destruct called twice with ze1_compatibility_mode = On
Submitted: 2004-08-19 14:16 UTC Modified: 2004-10-21 01:00 UTC
Votes:8
Avg. Score:4.1 ± 0.8
Reproduced:6 of 6 (100.0%)
Same Version:2 (33.3%)
Same OS:3 (50.0%)
From: hfuecks at phppatterns dot com Assigned:
Status: No Feedback Package: Scripting Engine problem
PHP Version: 5.0.1 OS: All
Private report: No CVE-ID: None
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From: hfuecks at phppatterns dot com
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 [2004-08-19 14:16 UTC] hfuecks at phppatterns dot com
Description:
------------
Using unmodified copy on php.ini-recommended (no extensions loaded etc.). Able to reproduce this problem with the Apache SAPI, CLI and CGI SAPIs.

With zend.ze1_compatibility_mode = On class destructors get called twice, once directly after the constructor.

With zend.ze1_compatibility_mode = Off (no other modifications to runtime) problem disappears (destructor called correctly).

This seems to have been reported before (not enough info): http://bugs.php.net/bug.php?id=27698

Have yet to confirm whether this in Windows specific (more from Linux when I get there...)

Reproduce code:
---------------
<?php
class Test {
	function __construct() {
		echo __METHOD__."\n";
	}

	function someMethod() {
		echo __METHOD__."\n";
	}

	function __destruct() {
		echo __METHOD__."\n";
		var_dump(debug_backtrace());
	}
}

$T = new Test();
$T->someMethod();
?>

Expected result:
----------------
Test::__construct
Test::someMethod
Test::__destruct
array(1) {
  [0]=>
  array(4) {
    ["function"]=>
    string(10) "__destruct"
    ["class"]=>
    string(4) "Test"
    ["type"]=>
    string(2) "::"
    ["args"]=>
    array(0) {
    }
  }
}

Actual result:
--------------
Test::__construct
Test::__destruct
array(2) {
  [0]=>
  array(5) {
    ["file"]=>
    string(20) "D:\php\test\test.php"
    ["line"]=>
    int(18)
    ["function"]=>
    string(10) "__destruct"
    ["class"]=>
    string(4) "Test"
    ["type"]=>
    string(2) "::"
  }
  [1]=>
  array(3) {
    ["file"]=>
    string(20) "D:\php\test\test.php"
    ["line"]=>
    int(18)
    ["function"]=>
    string(7) "unknown"
  }
}
Test::someMethod
Test::__destruct
array(1) {
  [0]=>
  array(4) {
    ["function"]=>
    NULL
    ["class"]=>
    string(4) "Test"
    ["type"]=>
    string(2) "::"
    ["args"]=>
    array(0) {
    }
  }
}

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History

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 [2004-08-21 21:10 UTC] hfuecks at phppatterns dot com
Definately not specific to Windows; checked this out on Linux (Gentoo, 2.4 kernel, PHP 5.0.1) - exactly the same problem.
 [2004-08-21 21:14 UTC] hfuecks at phppatterns dot com
Updating OS to "All" (daringly)
 [2004-10-13 06:02 UTC] php at bobsilva dot com
This is fixed in 5.1 CVS
 [2004-10-13 09:23 UTC] derick@php.net
Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip


 [2004-10-21 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2006-06-28 19:45 UTC] crazyone at crazycoders dot net
I confirm that on PHP 5.1.4 for windows 2003, activating the compatibility with zend engine 4 calls the destructor right after calling the constructor which is obviously a bug if you can't turn off the compatibility feature (Like on multi hosting servers without correct configuration)

For me though, it seems fixed as soon as i turn off the compatibliity
 
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