PHP Median Function

gistfile1.php

function median($numbers){
		
//loop through each value in the array and if it is a number add it to a new array
foreach ($numbers as $num) {
	if(is_numeric($num)){
		$num_array[]=$num;
	}
}
		
rsort($num_array); //sort the array for our operation
$count = count($num_array);
$mid = $count / 2;
		
return ($count % 2 != 0) ? "$count numbers - median value: " . $num_array[$mid] : "$count numbers - median value: " . ($num_array[$mid-1] + $num_array[$mid])/2;
}