In once, should call_user_func_array, instead of call_user_func

[goodevilgenius]

Since the arguments passed to the function are also passed to the callback, it would be useful if they were passed as-is.

So, I could write code like this:

public function foo(string $one, int $two = null): string
{
    return once(function (string $one, int $two = null) {
        return json_encode([$one, $two]);
    });
}

Otherwise, I have to first destructure the array that's passed into the callback, or specifically enclose the values.

And destructuring can have issues with optional arguments, since something like this wouldn't work if the second parameter isn't passed:

public function foo(string $one, int $two = null): string
{
    return once(function (array $args) {
        [$one, $two] = $args;
        return json_encode([$one, $two]);
    });
}

Currently, my best option is to do this:

public function foo(string $one, int $two = null): string
{
    return once(function (array $args) {
        $one = $args[0];
        $two = $args[1] ?? null;
        return json_encode([$one, $two]);
    });
}

Or, this, which seems to be the preferred method, based on the documentation:

public function foo(string $one, int $two = null): string
{
    return once(function () use ($one, $two) {
        return json_encode([$one, $two]);
    });
}