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

$aA = array_count_values(array(1,2,3,4,5,1,2,3,4,5,6,1,1,1,2,2));
$aB = array();
foreach($aA as $index=>$aux){
     array_push($aB,$index);
}
print_r($aB);

Result:

Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 )