Take a look at array_count_values and arsort.
<?php
$myarray = array("Human","Angel","God","Angel","Devil","God","God","Human","God","Angel");
$result = array_count_values($myarray);
arsort($result);
foreach($result as $word => $count)
{
echo $word." was found ".$count." time(s)<br/>";
}
?>
solved PHP words array count