Description:
------------
My PHP version wasn't an option, so it is actually "PHP Version 5.4.4-14+deb7u5" and my system is Linux toshiba 3.2.0-4-amd64 #1 SMP Debian 3.2.51-1 x86_64

Basically, when referencing an variable through a class (I only tested with __set and __get) it empty() returns true, even when it should return false.

Since it is kind of hard to explain, I posted a script below that demonstrates what I am talking about.

Test script:
---------------
<?php
class testing {
    protected $_response = array();
    
    public function __set($key, $value) {
        $this->_response[$key] = $value;
    }
    
    public function __get($key) {
        return $this->_response[$key];
    }
}

$testing = new testing();
$testing->foo = 'bar';
var_dump($testing->foo); //Returns 'string(3) "bar"
var_dump(empty($testing->foo)); //Returns bool(true)
?>

Expected result:
----------------
Line 17 should return bool(false)

Actual result:
--------------
Line 17 actually returns bool(true)