[PHP-DEV] Bug #13324 Updated: Access violations / memory problems From: txtilde <email protected>
Date: 09/15/01

ID: 13324
User updated by: txtilde <email protected>
Reported By: txtilde <email protected>
Status: Open
Bug Type: IIS related
Operating System: Windows 2000 SP2
PHP Version: 4.0.6
New Comment:

After further investigation, this seems to be a hint to a higher IIS threading problem rather than a problem specific to Zend Optimizer. If I create a php page with the function getmicrotime() in it and then call this page from 5 different browser windows at about the same time, I receive the following error:

Fatal error: Cannot redeclare getmicrotime() in C:\Websites\mysqlconnect.php on line 2

I've also confirmed that variables declared within the realm of the script are also available to other browser sessions. For example, creating a random number in a script and then executing a time consuming for-loop will result in more than one window ending up with the same random number.

Previous Comments:
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[2001-09-15 20:12:40] txtilde <email protected>

As a follow-up, with ZendOptimizer.dll uncommented in the php.ini file:

Each IIS restart and request to the php webpage will result in a new instance DLLHOST.exe being created in the Windows Task Manager. Older DLLHost.exe instances are not released with IIS Reset.

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[2001-09-15 19:45:40] txtilde <email protected>

This is a fresh install of PHP 4.0.6 on a new install of Windows 2000 server with service pack 2. Zend Optimizer is installed and the site is in Medium (pooled) mode. I am using the php4isapi.dll. There are no other programs or services installed on this machine.

The code executing is a single pconnect request to a MYSQL server and then a mysql_close() request. The code is not Zend optimized.

If I enable ZendOptimizer.dll in the php.ini and execute the code, it operates fine. But if I reset the IIS service, the server returns the following 2 errors randomly:

1) -2147417842 (0x8001010e)
2) Invalid access to memory location.

If I comment out the ZendOptimizer.dll in the PHP.ini file and then restart the web service, operation resumes as normal.

I believe the IIS Web Service is not releasing the ZendOptimizer.dll from memory and then trying to reload it when PHP is called. This may be a hint to all the access violations every one is getting.

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Edit this bug report at http://bugs.php.net/?id=13324&edit=1 

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