Detecting Source

[zijian60]

Hi,

If I have page A and page B. I only want user to be able to enter page B by a link from page A. I want to make sure user cannot enter page B through other methods like copying the url etc.

How do i go about doing it using php?

[yell0wdart]

You can get that by accessing $HTTP_REFERER in your PHP code. It's not perfect, you shouldn't depend on that only (if you're displaying sensitive data), as HTTP header info can be injected via XSS or HTTP debugging utilities like Fiddler.