Description:
------------
Using the magic function __tostring the result is an object and not a string.

Reproduce code:
---------------
class DataBaseConnector{

	protected $connection;
	private $host, $user, $pw, $db,$state = "unconnected";

	
	public function __construct($connection_data){
		$this->host = $connection_data[host];
		$this->user = $connection_data[user];
		$this->pw = $connection_data[pw];
		$this->db = $connection_data[db];
		if ($this->connect()) {
			$this->state = "connected";
		}
	}
	
	private function connect(){
		$this->connection = mysql_connect($this->host, $this->user, $this->pw);
		if (!$this->connection) return false;
		if (!mysql_select_db($this->db, $this->connection)) return false;
		return true;
	}
	...
	public function __tostring(){
		return $this->state;
	}
}


Expected result:
----------------
a string with "connected" or "unconnected"

Actual result:
--------------
new $x = DataBaseConnector(my_data)

echo $x; //it seems to be a string like "connected" or so
but
echo $x."<br>; //it returns Object id#1