<?php
$var = [];
$var = [1,2,3];
$var = [1,2,3];
echo $var[1];
$foo = [$var[1],$var[2]];
$foo = [
        1
        2
        3
       ];
$var = /*comment*/[1,2,3];
$var = array;

function foo(array $array) {}

function foo(array $array) use ($foo): array {}

abstract function foo(): array;

abstract function foo(): Foo\Bar;

abstract function foo(): \Foo\Bar;