Question

I have this code for a few check-boxes, works fine like this

foreach($_POST as $key => $order_type) {
    if ('1' == $_POST[$key]) $_POST[$key] = '0';
}

if I negate the if it stops working and I’m sure that some are not == ‘1’; it just sets them to NULL.

foreach($_POST as $key => $order_type) {
    if ('1' != $_POST[$key]) $_POST[$key] = '0';
}

do I miss anything ? tried with !('1' == $_POST[$key]) too.

Thanks

Answer 1

Checkboxes only get sent to the server if they are checked.

I assume that they have a value of 1, so you will be able to find these in the $_POST array. However, there will be none where the value is 0 (unless you specify a value of 0 in the html and check the box…).

To check checkboxes, you need to use isset as the value is really not that important, it is either set (checked) or not and then it simply does not appear.