#PHP, 38 bytes, 10 numbers, by Leo

Original code:

<?php__n_p___(_n=___(__=1___echo___?>

Cracks for 1-10:

1. <?php "n p ( n= ( =1"; echo +1?>
2. <?php "n p ( n= ( =1"; echo 1+1?>
3. <?php "n p ( n= ( =1"; echo 2+1?>
4. <?php "n p ( n= ( =1"; echo 3+1?>
5. <?php "n p ( n= ( =1"; echo 4+1?>
6. <?php "n p ( n= ( =1"; echo 5+1?>
7. <?php "n p ( n= ( =1"; echo 6+1?>
8. <?php "n p ( n= ( =1"; echo 7+1?>
9. <?php "n p ( n= ( =1"; echo 8+1?>
10. <?php "n p ( n= ( =1"; echo 9+1?>

Unfortunately, you left way too much space after the echo and it became possible to sneak a +1 in there.

PHP, 38 bytes, 10 numbers, by Leo

Original code:

<?php__n_p___(_n=___(__=1___echo___?>

Cracks for 1-10:

1. <?php "n p ( n= ( =1"; echo +1?>
2. <?php "n p ( n= ( =1"; echo 1+1?>
3. <?php "n p ( n= ( =1"; echo 2+1?>
4. <?php "n p ( n= ( =1"; echo 3+1?>
5. <?php "n p ( n= ( =1"; echo 4+1?>
6. <?php "n p ( n= ( =1"; echo 5+1?>
7. <?php "n p ( n= ( =1"; echo 6+1?>
8. <?php "n p ( n= ( =1"; echo 7+1?>
9. <?php "n p ( n= ( =1"; echo 8+1?>
10. <?php "n p ( n= ( =1"; echo 9+1?>

Unfortunately, you left way too much space after the echo and it became possible to sneak a +1 in there.

#PHP, 38 bytes, 10 numbers, by Leo

Original code:

<?php__n_p___(_n=___(__=1___echo___?>

Cracks for 1-10:

1. <?php "n p ( n= ( =1"; echo +1?>
2. <?php "n p ( n= ( =1"; echo 1+1?>
3. <?php "n p ( n= ( =1"; echo 2+1?>
4. <?php "n p ( n= ( =1"; echo 3+1?>
5. <?php "n p ( n= ( =1"; echo 4+1?>
6. <?php "n p ( n= ( =1"; echo 5+1?>
7. <?php "n p ( n= ( =1"; echo 6+1?>
8. <?php "n p ( n= ( =1"; echo 7+1?>
9. <?php "n p ( n= ( =1"; echo 8+1?>
10. <?php "n p ( n= ( =1"; echo 9+1?>

Unfortunately, you left way too much space after the echo and it became possible to sneak a +1 in there.

#PHP, 38 bytes, 10 numbers, by Leo

Original code:

<?php__n_p___(_n=___(__=1___echo___?>

Cracks for 1-10:

1. <?php "n p ( n= ( =1"; echo +1?>
2. <?php "n p ( n= ( =1"; echo 1+1?>
3. <?php "n p ( n= ( =1"; echo 2+1?>
4. <?php "n p ( n= ( =1"; echo 3+1?>
5. <?php "n p ( n= ( =1"; echo 4+1?>
6. <?php "n p ( n= ( =1"; echo 5+1?>
7. <?php "n p ( n= ( =1"; echo 6+1?>
8. <?php "n p ( n= ( =1"; echo 7+1?>
9. <?php "n p ( n= ( =1"; echo 8+1?>
10. <?php "n p ( n= ( =1"; echo 9+1?>

Unfortunately, you left way too much space after the echo and it became possible to sneak a +1 in there.