Description:
------------
When using __set($strProp, &$strValue), you are given the error: 

Method foo::__set() cannot take arguments by reference

If, you use $obj->property =& $that it will not call __set at all, but rather auto-create 'property';



Not a major issue, but at the least the __set not being called may need to be fixed.

Test script:
---------------
	class foo {
		private $var = NULL;
		function __set($strProp, $strValue) {
			var_dump('here');
			unset($strValue);
		}
	}
	
	class bar {
		var $that = 'that';
	}
	
	error_reporting(E_STRICT);
	
	$that = 'that';
	
	$foo = new foo();
	
	$foo->Property =& $that;
	var_dump($foo->Property);
	
        var_dump($that);
	
	$bar = new bar();
	$foo->Property =& $bar;
	
	var_dump($bar);

Expected result:
----------------
string(4) "here" 
undefined variable: $bar

Actual result:
--------------
string(4) "that"
object(bar)#7 (1) { ["that"]=> string(4) "that" }