need help passing parms

[cmadsen]

I am passing the following url and want to use the ID on another php page. How do I capture that ID on the new page?

<a href="online-stores.php?ID=38">XXXXXXX</a>

[Piranha]

$id = $_GET['ID'];

Just notice that variables that you use in database queries should be handled to avoid database injection.

[bradgrafelman]

Another tidbit of info when using $GET (or even $POST) variables: Make sure they actually exist before you try to use them. If your code depends on these variables, you can do something like this:

if(isset($_GET['ID'])) {
    // ok, the ID is in the query - do stuff here
} else {
    echo 'No ID found in query!';
    // no ID passed... what do we do now?
}

If not, you can tell PHP, "use the ID provided in the query string OR, if one isn't provided, use (this)" such as in this code:

$id = (isset($_GET['ID']) ? $_GET['ID'] : 0);

Note that I used the ternary operator in that example.