note 54960 deleted from install.windows.iis by betz

Note Submitter: Will ---- IF USING THE ISAPI MODULE ON WINDOWS, DO NOT FORGET TO ADD THE PATH TO YOUR PHP DIRECTORY TO YOUR PATH ENVIRONMENT VARIABLE. I didn't add c:\php\ to my path env var and the PHP install would work fine when I used the php-cgi.exe, but failed when I used the php5isapi.dll file. Whenever I added php extensions with the extension_dir="c:\php\ext" (Correct for my install): I would get and error like: Warning: PHP Startup: Unable to load dynamic library 'C:\php\ext\php_mssql' - The specified module could not be found. or Warning: PHP Startup: Unable to load dynamic library 'C:\php\ext\php_mysql' Then php and the web server would become unresponsive. I'd have to reboot the system because WWW services would not stop. When I added the environment variables (right click My Computer-> Properties, Advanced, Environment Variables, Edit the path variable and add ;c:\php\;c:\php\ext to the path), it started working correctly and stopped becoming unresponsive. I'm guessing the dlls refer to certain modules and the ISAPI code is unable to find the dlls but the CGI version finds them ok. Adding c:\php to the path, allows the system to find them. Finally, remember the IUSR_ and IWAM_ accounts that are used by IIS must have at least read-execute access to the PHP install dir.