in reply to How to check value of checkbox on form submit?

Checkboxes don't have values unless you give them one. If they are checked, the name=value pair is sent. Otherwise, IIRC, nothing is sent. So in your HTML, you need:

<input type="checkbox" name="blort" value="foo">
When you receive your form input, "blort" will equal "foo" if checked. If it isn't checked, "blort" will be undefined.