public function has_started($key)
  {
    if ( isset($this->measures[$key]) ){
      return $this->measures[$key]['start'] > 0;
    }
    return false;
  }
public function has_started($key)
  {
    if ( isset($this->measures[$key]) ){
      return $this->measures[$key]['start'] > 0;
    }
    return false;
  }
public function has_started ( $ key ) { if ( isset ( $ this -> measures [ $ key ] ) ) { return $ this -> measures [ $ key ] [ 'start' ] > 0 ; } return false ; }
Returns true is the timer has started for the given key

@return bool
Returns true is the timer has started for the given key