Description:
------------
I encountered a problem where my Apache Child process would crash and be restarted. The crash happend for me when include and / or require (also the _once versions of these 2) were called to files which didn't exist. This should have resulted in a warning or a fatal error but instead the error was only appended in the Apache error log and the Apache child process crashed.

After some searching i found out one of the php extensions was the culprit.

I disabled all the extensions and tested the extensions in batches. Eventually only one extension was enabled (the php_blenc.dll extension which came with pecl-5.1.2-Win32.zip). The moment i disabled this extension everything worked the way it should. But if it was enabled the problem was back.

Which version of Apache you use (Apache 1.3/2.0/2.2) doesn't matter. All of them have the same result.

I'm using both the pecl 5.1.2 and php 5.1.2 binary releases from the www.php.net website

Reproduce code:
---------------
<?php
echo 'test'; //lets generate some output to see whether the client browser receives any page

include('non-existant_file.php');
?>

Expected result:
----------------
The client browser will not receive the page because the Apache child process would have restarted discarding all existing requests.

Actual result:
--------------
Apache error log

[Thu Apr 20 17:43:03 2006] [notice] mod_security/1.9.3 configured
[Thu Apr 20 17:43:04 2006] [notice] Apache/2.2.0 (Win32) PHP/5.1.2 configured -- resuming normal operations
[Thu Apr 20 17:43:04 2006] [notice] Server built: Dec 11 2005 20:34:33
[Thu Apr 20 17:43:04 2006] [notice] Parent: Created child process 1048
[Thu Apr 20 17:43:05 2006] [notice] mod_security/1.9.3 configured
[Thu Apr 20 17:43:06 2006] [notice] Child 1048: Child process is running
[Thu Apr 20 17:43:06 2006] [notice] Child 1048: Acquired the start mutex.
[Thu Apr 20 17:43:06 2006] [notice] Child 1048: Starting 25 worker threads.
[Thu Apr 20 17:43:06 2006] [notice] Child 1048: Starting thread to listen on port 4716.
[Thu Apr 20 17:44:37 2006] [error] [client 192.168.0.240] PHP Warning:  include(non-existant_file.php) [<a href='http://www.php.net/manual/en/function.include.php'>function.include.php</a>]: failed to open stream: No such file or directory in H:\\webserver\\htdocs\\default\\blenc_bug.php on line 2
[Thu Apr 20 17:44:38 2006] [notice] Parent: child process exited with status 3221225477 -- Restarting.
[Thu Apr 20 17:44:39 2006] [notice] Apache/2.2.0 (Win32) PHP/5.1.2 configured -- resuming normal operations
[Thu Apr 20 17:44:39 2006] [notice] Server built: Dec 11 2005 20:34:33
[Thu Apr 20 17:44:39 2006] [notice] Parent: Created child process 4956
[Thu Apr 20 17:44:40 2006] [notice] mod_security/1.9.3 configured
[Thu Apr 20 17:44:41 2006] [notice] Child 4956: Child process is running
[Thu Apr 20 17:44:41 2006] [notice] Child 4956: Acquired the start mutex.
[Thu Apr 20 17:44:41 2006] [notice] Child 4956: Starting 25 worker threads.
[Thu Apr 20 17:44:41 2006] [notice] Child 4956: Starting thread to listen on port 4716.