Re: checkboxes, radio buttons and $_POST['<name>']

isset($_POST["chk1"]) will only be true if the checkbox is checked. Tim Ward http://www.chessish.com mailto:timward@chessish.com ----- Original Message ----- From: John-Erik Omland <John-Erik@ExploringBalance.com> To: <php-general@lists.php.net> Sent: Thursday, January 09, 2003 6:25 PM Subject: [PHP] checkboxes, radio buttons and $_POST['<name>'] Hi HELP!!! I have read through the manual about using $_POST['<name>'] to retrieve data from forms, but what happens when a form element is not filled in or checked? If I have a checkbox on a form called "chk1" I get an error from PHP when I try this: $chk1 = $_POST['chk1']; // error if user did not chech the checkbox on the form!!! How do ya usefully retrieve the fact that a form element has not been filled in/checked? Be Well, John-Erik Omland ==================================== "Rhythm is the basis of life, not steady forward progress. The forces of creation, destruction, and preservation have a whirling, dynamic interaction." - Kabbalah