Git WebHook will not pull (PHP)

Question

I have a PHP file, hook.php, that looks like this:

The file is located in /var/www/ol

Answer 1

create webhook.php in the root or anywhere from where you can access it

$result = exec("cd /path/to/repo && git pull origin branch");

make sure the permission is 775 and user of your file and your site directory is www-data owner