PHP/shuffle()

3	9	7	4	6
28	18	25	21	26
42	36	FREE	32	37
53	50	57	59	52
62	69	67	70	74

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);
}