A to the W

I was just recently playing around and got to thinking I coded a bubble sort algorithm in everything from C to Scheme but not in PHP. So I took a good college try at it and this is what I came up with:

/*
 Author: Anthony Wlodarski
 Created On: 1/18/10
 Bubble Sort Function
 */

// Pre: valid array
// Post: returns an array sorted with the bubble sort algorithm
 function bubble_sort($values = array())
 {
         if(count($values) < 2)
         {
                 return $values;
         }

         // we have an array with at least two items to sort
         $total_number_of_values = count($values);

         // for each element we must loop through the loop
         for($i = 0; $i < $total_number_of_values-1; $i++)
         {
                 // inside each loop we must iterate through the entire array to "bubble"
                 // our elements
                 for($j = 0; $j < $total_number_of_values-1; $j++)
                 {
                         if($values[$j] > $values[$j+1])
                         {
                                 $temp = $values[$j];
                                 $values[$j] = $values[$j+1];
                                 $values[$j+1] = $temp;
                         }
                 }
         }

         return $values;
 }

 $elements = array();
 $total_elements = rand(0, 256);
 for($a = 0; $a < $total_elements; $a++)
 {
         $elements[$a] = rand(0, PHP_INT_MAX);
 }


 $sorted_elements = bubble_sort($elements);

You can take a look at the algorithm in action here: http://hash.anthonyw.net/tests/bubblesort.php