<?php
// A few keywords. Obviously not valid syntax.
class Something extends SomethingElse implements Whatever
abstract public private protected function whatever() {}
const array()
for ($var as $var) { exit; }
if ($a and $b or $c xor $d) { die; } elseif { } else
goto a;

class Something extends SomethingElse implements Whatever
abstract public private protected function whatever() {}
const array()
for ($var as $var) { exit; }
if ($a and $b or $c xor $d) { die; } elseif { } else
goto a;
function (array $a) {}
const PRIVATE;
HttpStatus::CONTINUE;
function ($f) {
    yield $f;
    yield from fun();
}
class X extends Y {
    public function m() {
        parent::m();
    }
    public function n() {
        self::n();
    }
}
function