<?php
declare(strict_types=1);

class Foo
{
    public static function foo($x, $z): string {
        global $k, $s1;
        $obj->foo()->bar();
        $arr = [0 => "zero", 1 => "one"];
        call_func(function () {
            return 0;
        });
        for ($i = 0; $i < $x; $i++) {
            $y += ($y ^ 0x123) << 2;
        }
        $k = $x > 15 ? 1 : 2;
        $k = $x ?: 0;
        $k = $x ?? $z;
        $k = $x <=> $z;
        do {
            try {
                if (!0 > $x && !$x < 10) {
                    while ($x != $y) {
                        $x = f($x * 3 + 5);
                    }
                    $z += 2;
                } else if ($x > 20) {
                    $z = $x << 1;
                } else {
                    $z = $x | 2;
                }
                $j = (int)$z;
                switch ($j) {
                    case 0:
                        $s1 = 'zero';
                        break;
                    case 2:
                        $s1 = 'two';
                        break;
                    default:
                        $s1 = 'other';
                }
            } catch (exception $e) {
                $t = $one[0];
                $u = $one['str'];
                $v = $one[$x[1]];
                echo $val{foo . $num}[$cell{$a}];
            } finally {
                // do something
            }
        } while ($x < 0);

        return $x;
    }

    public function __toString() {
        return 'aaa';
    }
}

function bar(): Foo {
    return new Foo(1, 2);
}

?>
<div><?= Foo::foo(1, 2) ?></div>