Might be related to #55715

Confirmed on PHP 5.4.0 RC1, Apache 2.2.21 VC9
Windows 7 32bit

Expected result:
----------------
PHP 5.3.9RC1 prints: Microsoft Windows


Actual result:
--------------
PHP 5.4.0RC1 crash


<?php
 $z=50;while($z--){

  $o=new COM('WinMgmts:',null,CP_UTF8);
  foreach($o->ExecQuery('SELECT * FROM Win32_OperatingSystem') as $x){
   $s=$x->Caption;
  }

 }

 print($s);
?>

Occurs in any 5.4 version until nowm on any Windows OS.

The issue described in bug #55715 is solved by the patch, too:

Timm Friebe@carla ~/devel/php/php-src-5.4
$ cat test.xls
A1      B1      C1      D1      E1

(using tab-seperated values here)

Timm Friebe@carla ~/devel/php/php-src-5.4
$ cat excel.php
<?php
  $excel= new COM('Excel.Application');
  $excel->Workbooks->Open(realpath('test.xls'));
  $worksheet= $excel->ActiveSheet;
  for ($j= 1; $j <= 5; $j++) {
    echo $worksheet->Cells(1, $j)->Value, "\n";
  }
  $excel->Quit();
?>

Timm Friebe@carla ~/devel/php/php-src-5.4
$ ./Release_TS/php.exe excel.php
A1
B1
C1
D1
E1

Feel free to fix COM bugs.

Dmitry, can you review this patch? I'm not sure this is the right place to fix this issue - it's related to the literal caching in the Zend Engine's method call init opcodes (ZEND_INIT_[STATIC_]METHOD_CALL) and might need to be addressed there instead of having to change PHP extensions. Thanks!

Thanks Timm, I've committed your patch.

This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.