PHP/shuffle()

6 1 13 11 3
30 25 21 22 24
34 40 FREE 31 39
50 57 59 60 47
65 75 69 66 62
PHP 
$numbers = [];
	
for($i=0; $i<5; $i++){
  $col = range($i*15+1, $i*15+15);
  shuffle($col);
  $numbers[$i] = array_slice($col, 0, 5);
}

$numbers[2][2] = "FREE";

function h($s){
  return htmlspecialchars($s);
}