PHP adding leading 0 to range

Question

How do I have it render leading 0's for 1-9 ?

<?php foreach (range(1, 12) as $month): ?>


         <option value="<?=$month?>"><?=$month?></option>

       <?php endforeach?>

Answer 1

$month = 1;
echo sprintf("%02d", $month);
out: 01

Use sprintf

Answer 2

Use either str_pad():

echo str_pad($month, 2, '0', STR_PAD_LEFT);

or sprintf():

echo sprintf('%02d', $month);

Answer 3

if($month < 10) echo '0' . $month;

or

if($month < 10) $month = '0' . $month;

Answer 4

<?php foreach (range(1, 12) as $month): ?>
  <option value="<?= sprintf("%02d", $month) ?>"><?= sprintf("%02d", $month) ?></option>
<?php endforeach?>

You'd probably want to save the value of sprintf to a variable to avoid calling it multiple times.