Description:
------------
The result of empty($objA->g) is TRUE but result of var_dump or echo the $objA->g is a string value.

Maybe help you to fix it, I found : https://bugs.php.net/bug.php?id=36786

Test script:
---------------
<?php
# test empty result
class A {
	private $g = '';

	public function __get($property) {
		return $this->$property;
	}
	
	function run() {
		$this->g = '4, 5, 6';
	}

	function callA() {
		$clsB = new B();
		$this->run();
		$clsB->callB($this);
	}
}

class B {
	function callB($objA) {
		echo '<pre>';
		var_dump($objA->g); // is not empty
		var_dump(empty($objA->g)); // result is TRUE !? 
		echo '</pre>';
	}
}

$a = new A();
$a->callA();
?>

Expected result:
----------------
FALSE

Actual result:
--------------
TRUE