radio buttons in $_POST

I have this form.html: <form method="post" action="form.php"> text input <input type="text" name="input_test"><br /> radio input1 <input type="radio" name="radio_test" value="test1" /> radio input2 <input type="radio" name="radio_test" value="test2" /> <input type="submit" value="Submit"> </form> Then I have this script (form.php): <?php foreach ($_POST as $key => $val) echo "$key = $val\n"; ?> If I simply submit the form empty, all I get back from the script is the text input $key. The radio button doesn't show up. Why is that and how can I have it show up? (the radio input does show up once one of the radios is checked, but I need it to show up when empty as well.) -- H | I haven't lost my mind; it's backed up on tape somewhere. +-------------------------------------------------------------------- Ashley M. Kirchner <mailto:ashley@pcraft.com> . 303.442.6410 x130 IT Director / SysAdmin / WebSmith . 800.441.3873 x130 Photo Craft Imaging . 3550 Arapahoe Ave. #6 http://www.pcraft.com ..... . . . Boulder, CO 80303, U.S.A.