<?php // lint >= 7.4

function ()
{

};

function a($a)
{

}

function b($b, $bb = null)
{

}

function c($c = true, $cc = false)
{

}

function d($d = null, $dd)
{

}

function e($e = true, ...$ee)
{

}

function f($f = true, $ff = true, ...$fff)
{

}

fn ($g = true, $gg = false) => $g && $gg;
