Any php coder please help.me

Hi coders i have a rapidleech bussiness script
I want to do some changes.
Like i want to add a antiads blocker for free users
I ask the devloper of script but he not going to help
Now any one help me.
Like he used 0 for free user and 1 for vip so how i add a script.in php.for 0 value users that script.only run for him