<?php
// Correct.
function Foo() {}
$a = function() {};

abstract class Foo {
	public function PublicFunction() {}
	private function PrivateFunction() {}
	protected function ProtectedFunction() {}
	static function StaticFunction() {}
	abstract protected function AbstractProtectedFunction();
	final static public function FinalStaticPublicFunction() {}
}

// Incorrect.
function Bar() {}
$a = function() {};

abstract class Bar {
	public function PublicFunction() {}
	private function PrivateFunction() {}
	protected function ProtectedFunction() {}
	static function StaticFunction() {}
	abstract protected function AbstractProtectedFunction();
	final static public function FinalStaticPublicFunction() {}
}

$a = fn($x) => $x;