Question

Possible Duplicate:
Reference assignment operator in php =&

i want to create a blog,this is the controller file but i do not understand this line

$this->$model =& new $model;
what do this line?

    protected $_model;
    protected $_controller;
    protected $_action;
    protected $_template;

     function __construct($model, $controller, $action) {

        $this->_controller = $controller;
    $this->_action = $action;
    $this->_model = $model;

    $this->$model =& new $model;
    $this->_template =& new Template($controller,$action);

}

function set($name,$value) {
    $this->_template->set($name,$value);
}

function __destruct() {
        $this->_template->render();
}

}

Answer 1

The $model variable is interpolated. Say it says “Welcome.” This is interpolated to

$this->Welcome = & new Welcome;

The & does nothing in PHP 5 and should be removed. In PHP 4 it was necessary for the member to maintain a reference to the object instance.