check for existance of GET parm? (case insensitive)?

[tg4]

Hi -- I think this may be a fairly basic question, but I can't figure it out:

I want to check whether a querystring parm exists:

$_GET["somevar"]

but I want this check to be case insensitive (so SoMeVaR would get caught too.)

thanks very much.

[tsinka]

Hi,

as of php 4.2.0 you can use array_change_key_case() to do that.

Example:

$arrGet = $_GET;

// convert keys to lower case (default)
$arrGet = array_change_key_case($arrGet);

if (isset($arrGet['somevar'])) {
  echo "key/param exists";
}

Read more about this in the manual.

Thomas

[tg4]

awesome. thank you.