<?php namespace z7zmey\Example { use \Exception; use z7zmey\Foo\{Bar, function Baz}; abstract class Foo extends Bar implements Buz, Buzz { use \z7zmey\_Trait; public const CC = 0; public function &test(bool $a, string $b = null): ?void { } } } namespace z7zmey\Example2; if ($a === true) { } elseif ($a === false) { } elseif ($a === null) { } else { } $a = "string with $var "; $a = "string with out \$var"; $a = <<<test string $var test; `test $var `; ?> <?= $b = 22; $b ?>