private function format_trace_flags()
  {
    $flags = array();
    if (!$this->already_invoked)
    {
      $flags[] = 'first_time';
    }
    if (!$this->is_needed())
    {
      $flags[] = 'not_needed';
    }

    return (count($flags)) ? '('.join(', ', $flags).')' : '';
  }
private function format_trace_flags()
  {
    $flags = array();
    if (!$this->already_invoked)
    {
      $flags[] = 'first_time';
    }
    if (!$this->is_needed())
    {
      $flags[] = 'not_needed';
    }

    return (count($flags)) ? '('.join(', ', $flags).')' : '';
  }
private function format_trace_flags ( ) { $ flags = array ( ) ; if ( ! $ this -> already_invoked ) { $ flags [ ] = 'first_time' ; } if ( ! $ this -> is_needed ( ) ) { $ flags [ ] = 'not_needed' ; } return ( count ( $ flags ) ) ? '(' . join ( ', ' , $ flags ) . ')' : '' ; }
Format the trace flags for display.
Format the trace flags for display .