<?php

$Popular_array = array ('commenter' => 30, 'visitor' => 50, 'owner' => 10);
$Popular = array_search(max ($Popular_array), $Popular_array);

echo $Popular;

$Popular_array = array ('commenter' => 80, 'visitor' => 50, 'owner' => 10);
$Popular = array_search(max ($Popular_array), $Popular_array);

echo "\n",$Popular;

$Popular_array = array ('commenter' => 80, 'visitor' => 50, 'owner' => 100);
$Popular = array_search(max ($Popular_array), $Popular_array);

echo "\n",$Popular;