Simple script for use with GitHub web hooks

github_webhook.php

<?php

//Only allow requests from Github (see: https://gist.github.com/webtekk/6326465)
if (!githubOrigin()) die('Unauthorized');

$data = json_decode($_POST['payload'],true);

//Only continue if this commit is on the master branch
if (!$data['ref'] == 'refs/heads/master') die('Not a master branch commit');

//Pass the repo name and URL through to our shell script (see: https://gist.github.com/webtekk/6326294)
shell_exec('cd '.dirname(__FILE__).'; ./gitarchivemaster.sh '.$data['repository']['url'].' '.$data['repository']['name']);