I am making an online survey, and i want the people that take this survey to only be able to view one of the pages once, meaning they cant refresh, enter the page again, or click their back button to get to it once they get to the page after it. I used a cookie and i logged their ip with mysql and if statements, but for some reason they have to click refresh on the page for it to actually recognize that the ip is in the database or the cookie is on their comp, because they can still click their back button to get to the page and they can access the page from the url, the only way my script works is if they click refresh.
someone help plz!
