PHP
```{.php}
$fn = function(int $m, int $n) : int { return $n === 0 ? 0 : ceil($m / $n); };
print_r($fn(0, 1)); // 0
print_r($fn(1, 1)); // 1
print_r($fn(2, 1)); // 2
print_r($fn(1, 10)); // 1
print_r($fn(10, 10)); // 1
print_r($fn(11, 10)); // 2
```
PHP
```{.php}
$fn = function(int $m, int $n) : int { return $n === 0 ? 0 : ceil($m / $n); };
print_r($fn(0, 1)); // 0
print_r($fn(1, 1)); // 1
print_r($fn(2, 1)); // 2
print_r($fn(1, 10)); // 1
print_r($fn(10, 10)); // 1
print_r($fn(11, 10)); // 2
```