Cron job is not working properly in cpanel

Instead of putting in cronjob command like

php -f /path_to_script/script.php 

put command like this:

curl http://domain.com/yourscript.php

if you want to suppress output you can add > /dev/null at the end.

So full command would be:

curl http://domain.com/yourscript.php > /dev/null

Hope this helps!