> I'm storing the values from a groups of checkboxes > in an array "keyword[]", but $_POST['keyword'] is > undefined if none of the checkboxes is checked. The fact that it is undefined if none of the checkboxes are checked is expected behavior. Just do: if( isset( $_POST['keyword'] ) { } to determine if you need to do any further processing. > I tried using "in_array()" with $_POST to determine > if any of the group of 'keyword' checkboxes is checked, > but can't get it to work; does anyone have any > suggestions? if( isset( $_POST['keyword'] ) { foreach( $_POST['keyword'] as $checkboxValue ) { echo 'Checkbox ' . $checkboxValue . ' was checked<br>'; } } Chris -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php