URL variable passing with missing variable 2

[Zych]

Hello Everybody,

I have a page in which I want to pass in variables via the URL. This part is easy. The question I have is if no variable is passed. If none is passed I want to set it to Null. How can I do this only when no variable is passed?

For instance if I have a site setup to take this:

http://www.somesite.com?referingid=1234

I know I have the variable referingid but if somebody does the following:

http://www.somesite.com

Then there is no variable passed so I want to set referingid to Null.

Thanks,

Zych

 

[Bastien]

In the receving page default the varaibles to something before you try to access them

$local_var = '';

if(!empty($_GET['var'])){
$local_var = $_GET['var'];
}//end if

Bastien

I wish my computer would do what I want it to do,
instead of what I tell it to do...

 

[Chacalinc]

[tt]isset($_GET['referingid'])[/tt] will return true or false depending if $_GET['referingid'] is set or not.

Cheers.

 

[Zych]

Thanks for both of your answers. They work like a charm!