[Resolved] How check what page user was last on?

influensi

I'm trying to write a script that will only allow a user to view a certain page if they have just come through a link on my site and not from typing the url in the address bar or following an external link. How can I achieve this?

bradgrafelman

Wanna really simple way?

$_SERVER['HTTP_REFERER'];

PHP Manual: Reserved Variables[/code]

influensi

All that does is retreive the address a page linked from. I could use a simple if to prevent users from typing in the address bar, but I would have to parse out the actual domain name to stop a link from working. So, I suppose the next part of my question is, how do I parse out the domain name or is there another reserved variable for that?

influensi

Right, I could just use a substring that gets my domain's length from the http referer thing... I'll try that before I mark this thread resolved.

bradgrafelman

substr, or ereg:

ereg('http://([[:alnum:].-]+\.[[:alpha:]]+)', $_SERVER['HTTP_REFERER'], $regs);

echo $reg[1];

That should output the domain name. If you want to use IP addresses, you should instead use:

ereg('http://([[:alnum:]]{1,3}\.[[:alnum:]]{1,3}\.[[:alnum:]]{1,3}\.[[:alnum:]]{1,3})', $_SERVER['HTTP_REFERER'], $regs);

echo $reg[1];