public function next()
    {
        do {
            $this->_key = next($this->_keys);
        } while (!isset($_SESSION[$this->_key]) && $this->_key !== false);
    }
public function next()
    {
        do {
            $this->_key = next($this->_keys);
        } while (!isset($_SESSION[$this->_key]) && $this->_key !== false);
    }
public function next ( ) { do { $ this -> _key = next ( $ this -> _keys ) ; } while ( ! isset ( $ _SESSION [ $ this -> _key ] ) && $ this -> _key !== false ) ; }
Moves the internal pointer to the next array element.
This method is required by the interface [[\Iterator]].
Moves the internal pointer to the next array element . This method is required by the interface [[ \ Iterator ]] .