Invoke class property test

invokeable.php

<?php

class Invokeable {
    public function __invoke() {
        echo "Hello World!\r\n";
    }
}

class Container {
    private $_invokeable;

    public function __construct(Invokeable $invokeable) {
        $this->_invokeable = $invokeable;
    }

    public function callIt() {
        $this->_invokeable();
    }
}

$invokeable = new Invokeable();
$invokeable();

$container = new Container($invokeable);
$container->callIt();

Result of running this file:

Hello World!
PHP Fatal error:  Call to undefined method Container::_invokeable() in /home/tobias/sources/playground/invoke.php on line 17

Fatal error: Call to undefined method Container::_invokeable() in /home/tobias/sources/playground/invoke.php on line 17