PHP Form Validation and Radio Group

Question

Hi David,
I'm trying to set the initial state of a radio group to none.
Please look at the file http://ecopethandbags.com/contact.php. The initial state is set to "No"
In Dreamweaver, I've set the initial state to "Unchecked"
I don't understand the code for the radio buttons in my file (see attachment).
What I am trying to do is to have the radio group initially unchecked but required.
I have 2 questions:
1) - How can I control the initial status of the radio group when I use the PHP form validation?
2) - How can I set the validation so, when one of the radio buttons is not checked by the user, a warning flag like "Please make a choice" comes up.
Thank you much!

Answer 1

Just change the following section of code:
<?php
if (!$_POST || isset($missing) && $_POST['subscribe'] == 'n') {
  echo 'checked="checked"';
} ?>
Remove the !$_POST || like this:
<?php
if (isset($missing) && $_POST['subscribe'] == 'n') {
  echo 'checked="checked"';
} ?>
The checked="checked" will be inserted into the code only if the form has been submitted, but neither radio button has been selected.