redirect to other page if id is missing!!

[canabatz]

Hello all!!

i got a small problem ,not big :)

i got this example of a link in my site that display everything correctly!

http://www.mysite.com/product.php?id=200

now my problem is : if change the id by hand to id that is not exist ,then all
the page is getting a big mess because there is no data to show!!

normal users wont change the id by hand ,but i want to do something else!!

how do i hide the product.php to be index.php?id=200 ,i want to hide the direct link!

thanx ,and sorry for my poor english :)

[Dormilich]

for URL rewriting you can use Apache's mod_rewrite (via .htaccess) but that may not be enabled, depending on your server settings.

but generally, your script should handle the "wrong ID problem" itself (i.e. you should write some classes/methods/functions that can handle (invalid) IDs)

say, you have a couple of valid IDs, store them in an array and check if the ID from $_GET is contained in the array. if not, forward to a 404 or default page.

regards

[canabatz]

the ids in my site is generated dynamicly on any new product!

i dont understand the $_GET thing and how to use it for my need!!

i prefer to hide the link to the product ,and if there is no product id of the number inserted by hand by some hacker or somthing ,it will be redirect to my main page ,the index.php!!

thanx!! ;)

[Dormilich]

@canabatz
???

$_GET is a superglobal array, that stores all url parameters (PHP: $_GET - Manual). so in your case $_GET['id'] would give you the id value 200.

in the end, you have to store these values anywhere, otherwise using IDs wouldn't make sense, would it? and from that source you can fetch all IDs and validate the id value from the url against that.
@canabatz
how will you know that the inserted product id is invalid?

regards