public function remove($key)
    {
        $this->open();
        $data = $this->data;
        if (isset($data[$key])) {
            unset($data[$key]);
        }
        $this->data = $data;
    }
public function remove($key)
    {
        $this->open();
        $data = $this->data;
        if (isset($data[$key])) {
            unset($data[$key]);
        }
        $this->data = $data;
    }
public function remove ( $ key ) { $ this -> open ( ) ; $ data = $ this -> data ; if ( isset ( $ data [ $ key ] ) ) { unset ( $ data [ $ key ] ) ; } $ this -> data = $ data ; }
Removes a session variable.
@param string $key the name of the session variable to be removed
Removes a session variable .