Type hinting for properties in PHP 7?

Question

Does php 7 support type hinting for class properties?

I mean, not just for setters/getters but for the property itself.

Something like:

Answer 1

You can use setter

class Bar {
    public $val;
}

class Foo {
    /**
     *
     * @var Bar
     */
    private $bar;

    /**
     * @return Bar
     */
    public function getBar()
    {
        return $this->bar;
    }

    /**
     * @param Bar $bar
     */
    public function setBar(Bar $bar)
    {
        $this->bar = $bar;
    }

}

$fooInstance = new Foo();
// $fooInstance->bar = new NotBar(); //Error
$fooInstance->setBar($fooInstance);

Output:

TypeError: Argument 1 passed to Foo::setBar() must be an instance of Bar, instance of Foo given, called in ...