I want help in simple faucet script coding

[Day2007]

Sir I'm making new faucet but I want to know about something that    some faucets   accidentally clicks the visitor to ads how   it's ads behind the claim reward button can someone help me in this matter

I'm using simple faucet script
Or using a-ads banners
So what I do behind claim reward coding   in frist time the visitor go on ad and second time it get his/her reward