[PHP] Need to check whether a param exists!

[Brian Dunning]

Hi,

All I'm trying to do is check for the presence of a query string, but everything I try gives me an Undefined Index error. I want to set a variable $pagename to whatever was passed as the ?page= value, and if it wasn't passed, set it to some default value.

http://www.mysite.com/index.php?page=hello

<?php
if (is_object($_REQUEST['page']))
$pagename = $_REQUEST['page'];
else
$pagename = "home";
?>

I also tried is_null, tried if($_REQUEST) by itself, also tried all of these with $_GET, $_POST, $_GLOBAL, but they all give me Undefined Index error on that If line.

- Brian


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