PHP/shuffle()

1 14 7 9 2
19 30 16 26 21
40 38 FREE 42 36
48 60 53 56 59
63 64 73 68 70
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);
}