The first thing I would do would be to get rid of all this unnecessary repetition:
PHP Code:
(isset($friendRequestDecision[$requestorID]) && $friendRequestDecision[$requestorID] == '0')
You've checked this value already:
PHP Code:
$friendRequestDecision[$requestorID] = (isset($requesteeApproved) ? $requesteeApproved : 0);
Just assign this value to a temporary (shorter) variable for use within the loop:
PHP Code:
$decision = $friendRequestDecision[$requestorID];
This will make the code much easier to read.
I would also use HEREDOCs to reduce the clutter:
PHP Code:
$an_input = <<< HEREDOC
<input id='Requestor{$requestorID}{$ID}' name='{$requestorID}' type='radio'
etc.. >
HEREDOC;
// then later
echo $an_input;
And, yes, put whatever you need on the page initially to help you test and debug it
Added: I know that I haven't answered your previous question directly but.. if you make these changes it will make it much easier for you (everyone) to read and understand, and to discover what any issues are.