Function to get the first item that's set. I always find myself writing crap like this out a dozen times.

whichever.php

<?
/*
$first = null;
$second = 'ketchup';
$third = 'mustard';
$condiment = whichever($first, $second, $third); // $condiment == 'ketchup';
*/

function whichever() {
	$options = func_get_args();
	
	foreach ($options as $option) {
		if (isset($option) && $option) {
			return $option;
		}
	}
}
?>