PHP/shuffle()

2 9 8 5 3
29 24 21 26 16
43 44 FREE 34 31
59 57 49 47 54
68 63 62 72 67
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);
}