Online PHP editor | output for ogcL0

@ 2015-11-02T20:28:21Z

<?php

interface MyInterface {
    public function get(): int;
    public function set(int $value);
}

class Factory {
    
    private $instance = null;
    
    public function getInstance(): MyInterface
    {
        if ($this->instance === null) {
            $this->instance = new class() {
                private $var;
                public function get(): int {
                    return $this->var;
                }
                public function set(int $value) {
                    $this->var = $value;
                }
            };
        }
        return $this->instance;
    }
}

function display(MyInterface $object)
{
    var_dump($object->get());
}

$factory = new Factory();
$o = $factory->getInstance();
$o->set(5);
$o2 = $factory->getInstance();

display($o2);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught TypeError: Factory::getInstance(): Return value must be of type MyInterface, class@anonymous returned in /in/ogcL0:25 Stack trace: #0 /in/ogcL0(35): Factory->getInstance() #1 {main} thrown in /in/ogcL0 on line 25
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Fatal error: Uncaught TypeError: Return value of Factory::getInstance() must implement interface MyInterface, instance of class@anonymous returned in /in/ogcL0:25 Stack trace: #0 /in/ogcL0(35): Factory->getInstance() #1 {main} thrown in /in/ogcL0 on line 25
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28: Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/ogcL0 on line 4
Process exited with code 255.

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