[PHP-DEV] Allow zero parameters in array_merge()?

[Benjamin Morel]

Hi Internals,

I'm wondering if there's any reason why array_merge() doesn't allow zero
arrays to be passed?

    array_merge(); // Warning:  array_merge() expects at least 1 parameter,
0 given

It would be reasonable IMO to return an empty array in this case. The
reason is, I'm often using it this way:

    $result = [];

    foreach (...) {
        $result[] = getSomeListOfItems();
    }

    if (! $result) {
        return [];
    }

    return array_merge(...$result);

If we allowed zero arrays to be passed, I could get rid of this repeated
empty array check before array_merge().

Ben