How to use default value when `null` is given for a nullable function parameter?
No PHP doesn't have a "fallback to default if null" option. You should instead do:
private function dostuff(?int $limit = null) { // pre-int typehinting I would have done is_numeric($limit) ? $limit : 999; $limit = $limit ?? 999;}Alternatively make sure you either do dostuff() or dostuff(999) when you don't have a sensible value for doing stuff.
Note: There's also reflection to get the default values of method parameters but that seems a too much.
However here's how:
$m = new ReflectionFunction('dostuff'); $default = $m->getParameters()[0]->getDefaultValue(); dostuff($default);