Special requests using PHP on Apache go unlogged and cause a segfault. Tested systems: Windows / Apache 1.3.31 / PHP 5.0.0, Windows / Apache 1.3.27 / PHP 4.3.3, Linux / Apache 1.3.24 / PHP 4.2.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33992/phpWeird.txt
Source: https://packetstormsecurity.com/files/33992/phpWeird.txt.html