Structure was modified of $Git_Tests['Git']

[fitorec]

Maybe another option would:

<?php

$Git_Tests = array(
    'Git' => function() {
        $repo = new GitRepo();
        return $repo->test_git()? array(0, "Git was located and tested successfully") :
                            array(1, "Git could not be found at the default location");
    },  

[fitorec]

I'm thinking it's a good idea to initialize all arrays to null.

[fitorec]

All arrays $Git_Tests

[kbjr]

It's been quite a while since I wrote this, so I am reacquainting myself with this code as I go...

I agree, it does seem more efficient. I will change that in a minute..