default id number if no variable passed

[drtanz]

Hi I am passing the id parameter through the url, however i want to add a piece of code that permits me to assign a default id value if no value has been passed in the url. how can i do this?

<?php $id=$_GET['id']; ?> // what i have

If that is null then $id=25; // what i want

[The-Master]

Try something like this:

<?php
if (isset($_GET['id'])){
$id=$_GET['id'];}
else{$id=25;}
?>

If it doesn't work just tell me. I haven't tested it.

[mark_kccs]

Hi drtanz

if (isset($GET['id'])) {
$id=$GET['id'];
} else {
$id=25;
}

Give this a try. You may want to add to this to check for unwanted or malicious data.

[The-Master]

mark_kccs wrote:

Hi drtanz

if (isset($GET['id'])) {
$id=$GET['id'];
} else {
$id=25;
}

Give this a try. You may want to add to this to check for unwanted or malicious data.

Ha! I beat you. Oh well. Looks like we came up with practically the same code so it should work!

[mark_kccs]

So close 🙂

Have a good one

[laserlight]

Here is a somewhat shorter version with a precautionary cast to int:

$id = isset($_GET['id']) ? (int)$_GET['id'] : 25;

[bradgrafelman]

And if you plan on using this user-supplied data in a SQL query, you definitely want some precautionary steps (e.g. what laserlight has done).