Radio Button help with session varibles

[hewstone]

I have some code below that outputs a Radio button list. This will create about 6 different Radio points. However im stuck on how i can create a session varible for each Radio button, so everytime a user clicks on the Radio button (or on the 'submit' button) this will create a session varible with the value = $test. Session_start() has been added before this code
.............
//This will output a Radio button list
echo "<form action='Cleanser_step3.php' name='form2' method='POST'>";
for ($test=1; $test<=$column1; $test++){
echo "<label>";
echo "<input type='radio' name='Col$test' value=$test" ;
if (isset($fields['Col$test']) == '$test') echo 'checked';
echo ">";
echo "Column ".$test;
echo "</label>";
echo "<br>";
}
echo "<input type='submit' align='right' value='Next >>'>";
$_SESSION['$DimOther'] = $DimOther;
echo "</form>";
}
................

[etully]

In Cleanser_step3.php, you are going to want to do two steps

Loop through the key/value pairs in the $_POST variable and find all the keys that match Col###

Any time you find a match, you are going to want to add it to an array stored in a persistent session variable (which I have chosen to call "radio_storage" but you can call it anything you want). Since that session variable may or may not exist when you start, you have to check to see if it exists before you start.

//  create the array if it doesn't exist
if (!isset($_SESSION['radio_storage'])) {
	$_SESSION['radio_storage'] = array();
}

// loop through all the post variables and see if any radio buttons were clicked
foreach ($_POST as $k=>$v) {
	if (preg_match("/^Col[0-9]+$/",$k)) { 
		// add it to the array if it's not already in the array
		if (!in_array($v,$_SESSION['radio_storage']) {
			$_SESSION['radio_storage'][] = $v; 
		}
	}
}