@okkun-sh Thanks for continuing your work on the documentation!

Just one question - would it make sense to maybe show some more alternatives on the "cross-version compatible" side of the comparison ?

For example:

$a = [2, 3];
$c = [0, 1, 4, 5];
array_splice($c, 2, 0, $a);

... is also equivalent to $b = [0, 1, ...$a, 4, 5]; (with $c being changed by reference in the array_splice())

See: https://3v4l.org/v0hs7

Thanks for those updates @okkun-sh ! LGTM.