So I've installed PHP Unit via PEAR (all the files are there, I've checked). However, when I try to run a test I get: Warning: require_once(PHPUnit/Framework.php) [function.require-once]: failed to open stream: No such file or directory in C:\WAMP\www\ExampleTests\arraytest.php on line 2 I'm guessing this has something to do with my PHPUnit installation not updating the include_path properly, but I'm not too sure what to update it to? I'm on Windows (7), using WAMP. Cheers! EDIT: The bottom of PHP.ini contains: ;***** Added by go-pear include_path=".;C:\WAMP\bin\php\php5.3.10\pear" ;***** I also get the error: Fatal error: require_once() [function.require]: Failed opening required 'PHPUnit/Framework.php' (include_path='.;C:\php\pear') However, after looking in PHP.ini, there's no include path that points to C:\php\pear?