Grouping arrays in PHP

Question

I have an array of 200 items. I would like to output the array but group the items with a common value. Similar to SQL\'s GROUP BY method. This should be relatively easy to

Answer 1

Here's a quick example:

$a = array(1, 2, 3, 1, 2, 3, 3, 2, 3, 2, 3, 4, 4, 1);
$n = array_count_values($a);
arsort($n);

print_r($n);

Array ( [3] => 5 [2] => 4 [1] => 3 [4] => 2 )