Contare tag separati da virgola

[fmortara]

$array = array('pippo','poldo','pippo','pippo','pippo','pluto','pluto','pluto','pluto','pippo'); 
$array = array_count_values($array); 
arsort($array);

echo '<pre>'; 
print_r($array); 

$n = 1
foreach($array as $k => $v) { 
  if($v >= 4 && $n <=30) 
    echo $k.' '.$v.'
'; 
    $n++
}