How can I print integer in triangle form

Question

I want to print integer in triangle form which look like this

    1
   121
  12321

I tried this but I do not get the actual result

Answer 1

For all the x-mas lovers:

$max = 9; # can be 2 .. 9
for($i = 1; $i <= $max; $i++) {
    $line = (str_pad('', $max - $i));
    for($ii = 1; $ii <= $i; $ii++) {
        $line .= $ii;
    }   
    for($ii = $i-1; $ii > 0; $ii--) {
        $line .= $ii;
    }   
    echo $line . PHP_EOL;
}

Output:

        1
       121
      12321
     1234321
    123454321
   12345654321
  1234567654321
 123456787654321
12345678987654321

Amazing what computers are able to achieve nowadays! Isn't it?