Online PHP editor | refs for TBO5v

@ 2017-07-13T08:40:23Z

<?php
$input= array(12,43,66,21,56,43,43,78,78,100,43,43,43,21);

$count_values = array();
foreach ($input as $a) {

     $count_values[$a]++;

}
echo 'Duplicates count: '.count($count_values);
print_r($count_values);
?>