Undefined index: orderBy

Hi,

I have the following code to determine how I want my results (pulled from a
database) ordered.

if (!$_GET['orderBy']) {
$orderBy = "startDate";
} else {
$orderBy = $_GET['orderBy'];
if ($orderBy=="") {
$orderBy = "startDate";
}
}

I can't remember (been a while since I've used php) how to determine whether
or not a query string variable is present and if it isn't return a value for
the defined variable. At the moment, when no query string is present I get
the error: Notice: Undefined index: orderBy

When there is a query string, obviously there is no error.

Many thanks in advance.

Cheers

Hamish

Hamish McCracken wrote:
> I can't remember (been a while since I've used php) how to determine
> whether or not a query string variable is present and if it isn't
> return a value for the defined variable. At the moment, when no query
> string is present I get the error: Notice: Undefined index: orderBy
>

www.php.net/isset


JW

On Sat, 25 Sep 2004 01:00:56 +0200, Janwillem Borleffs wrote:

> Hamish McCracken wrote: 
> www.php.net/isset

how about array_key_exists?

HTH,
La'ie Techie