Question

I’ve made a class:

class MyClass {
    function __get($name) {
        $this->{$name} = $_SESSION[$name];
    }

    public function isNull(){
        return $this->MyVar === null;
    }
}

var_dump($obj->isNull()) //$obj is instance of MyClass always outputs bool(true) doesn’t matter $_SESSION['MyVar'] is set or not. But if I add $this->MyVar; before return $this->MyVar === null; works as expected.

Well it seems that __get() is executed (because $MyVar is not set so it’s inaccessible) but property stays NULL until second usage.

Does it happen because it’s not set at all? How can I avoid using extra line ($this->MyVar;)?

Answer 1

__get() must return the value. Change it to:

function __get($name) {
    return $_SESSION[$name];
}