php help.

[DAMINK™]

I want to make a group of pages. Now for the purpose of this lets call them.
page1.php
page2.php
page3.php
page4.php.

Now i simply want to force the user to start at page one and not be allowed to go to 2,3 or 4 without previously visiting the page prior.
Now i assume its simply session related but well.... PHP and me just seem to not get along.

So could anyone help?

[Tim]

How secure does this have to be? An easy way would be to check the $_SERVER['HTTP_REFERER'] to make sure they came from the previous step, however this can be spoofed so if your dealing with payment or something then your probably better off setting a database tracked cookie at each step, with some form of encrypted cookie value which needs to be compared with what is already stored in the DB.

[Orgy]

at page one, you could do something like

PHP Code:

$_SESSION['lastpage'] = "one"; 


Before redirecting them to page two, and then at page two you could do:

PHP Code:

if ($_SESSION['lastpage'] != "one")
{
    die("Please complete page one first");
} 


and just modify that appropriately for each page.

[Chimi]

Orgy's response should work, if not PM me.