Description:
------------
This happens basically everytime PHP is upgraded by simply executing the windows installer. The problem is that the apache config is modified (which is reallt not even neccesary in a minor upgrade), in a way that breaks apache.

This is what gets added:

#BEGIN PHP INSTALLER EDITS - REMOVE ONLY ON UNINSTALL
PHPIniDir ""
LoadModule php5_module "php5apache2_2.dll"
#END PHP INSTALLER EDITS - REMOVE ONLY ON UNINSTALL

This is plain WRONG, because this piece of config assumes php5apache2_2.dll to be in apache's installation directory, which it isn't. The installer installs it in "C:\Program Files (x86)\PHP", which is a totally different directory, obviously. This problem produces two consecutive errors in the event log, upon starting Apache:

>>> httpd.exe: Syntax error on line 426 of C:/Program Files (x86)/Apache Software Foundation/Apache2.2/conf/httpd.conf: Cannot load C:/Program Files (x86)/Apache Software Foundation/Apache2.2/php5apache2_2.dll into server: The specified module could not be fo     .

>>> und.     .

The solution is to include the path to the dll, like so:

LoadModule php5_module "C:/Program Files (x86)/PHP/php5apache2_2.dll"

This should (can can) be handled by the installer.

Also, second error is the PHPIniDir. It shouldn't be empty. That's WRONG as well, and produces the following error:

>>> PHPINIDir takes one argument, Directory containing the php.ini file     .

Why on earth would the installer produce such errors in the apache conf?? The solution, again, is to simply include the path to where php.ini has been put, which is almost always the installation dir:

PHPIniDir "C:/Program Files (x86)/PHP/"