php.ini

(on windows) can someone tell me where to define which php.ini gets used? On my dev box, I installed the zend editor. Now when i do a localhost/phpinfo() from a normal browser window (ie not from within the zend IDE) it says php is using the <..>/zend/php.ini settings file... within apache's httpd.conf you can set which php DLL to use, but I cannot see how php then knows which .ini file to work with? It seems to be picking up the php.ini from a completely different directory somewhere, so i am wondering if the zend installer sets some secret registry value that the php.dll is looking for? I would have thot something like: httpd.conf > extension=php5.dll then the dll looks for a php.ini in the same directory. or does it look in the <path> or something? On windows, I installed php/apache etc using the webserv project, if this is relevant. it seems to give a clean setup of apache, mysql, php etc. Thanks! /dc