alternative $link if no id exists in URL

I was wondering how I can do the following.



Example: When a surfer goes to index.php there is a list of links including
example.php. I only want the link to appear as example.php if a id variable
is given in the url. Example. www.mydomain.com/index.php?id=564, if not "ID"
is given, example www.mydomain.com/index.php or
www.mydomain.com/index.php?othervariable=5, I would like the example.php
link to go to example2.php instead of example.php.



Something like: $link = example, if no ID exists, $link=example2. In the
source the link will appear as www.mydomain.com/$link.php.



I am new to php and don't know how I would put this in proper code. Hope
someone can help.

"1" <tre-cool@rogers.com> kirjoitti
viestissä:XcKdnZE2274uYQXeRVn-qg@rogers.com...

> Something like: $link = example, if no ID exists, $link=example2.


$link = isset($_GET['ID']) ? 'example' : 'example2';

That menas that if the parameter ID was supplied in the page call, 'example'
is assignet into $link, in any other case 'example2' will be assigned to
$link. Was this what you wanted?

--
SETI @ Home - Donate your cpu's idle time to science.
Further reading at <http://setiweb.ssl.berkeley.edu/>
Kimmo Laine <antaatulla.sikanautaa@gmail.com.NOSPAM.invalid>

That worked, thanks so much!
"1" <tre-cool@rogers.com> wrote in message
news:XcKdnZE2274uYQXeRVn-qg@rogers.com...
> I was wondering how I can do the following.
>
>
>
> Example: When a surfer goes to index.php there is a list of links
including
> example.php. I only want the link to appear as example.php if a id
variable
> is given in the url. Example. www.mydomain.com/index.php?id=564, if not
"ID"
> is given, example www.mydomain.com/index.php or
> www.mydomain.com/index.php?othervariable=5, I would like the example.php
> link to go to example2.php instead of example.php.
>
>
>
> Something like: $link = example, if no ID exists, $link=example2. In the
> source the link will appear as www.mydomain.com/$link.php.
>
>
>
> I am new to php and don't know how I would put this in proper code. Hope
> someone can help.
>
>
>