Array group by count (See related posts)

<?php
function ArrayGroupByCount($_array, $sort = false) {
   $count_array = array();

   foreach (array_unique($_array) as $value) {
       $count = 0;

		foreach ($_array as $element) {
		    if ($element == $value)
		        $count++;
		}
	
		$count_array[$value] = $count;
	}
	
	if ( $sort == 'desc' )
		arsort($count_array);
	elseif ( $sort == 'asc' )
		asort($count_array);

	return $count_array;
}
?>