public function removeSessionItem($key)
    {
        if (isset($this->session[$key])) {
            unset($this->session[$key]);
            return true;
        } else {
            return false;
        }
    }
public function removeSessionItem($key)
    {
        if (isset($this->session[$key])) {
            unset($this->session[$key]);
            return true;
        } else {
            return false;
        }
    }
public function removeSessionItem ( $ key ) { if ( isset ( $ this -> session [ $ key ] ) ) { unset ( $ this -> session [ $ key ] ) ; return true ; } else { return false ; } }
Remove a single session by index from the session array.
@param mixed $key.
@return boolean $succes.
Remove a single session by index from the session array .