original_string: public static function isValid() {
  		if(isset($_SESSION['dachi_closed']) && !isset($_SESSION['dachi_expires']))
  			return false;
  
  		if(isset($_SESSION['dachi_expires']) && $_SESSION['dachi_expires'] < time())
  			return false;
  
  		return true;
  	}
code: public static function isValid() {
  		if(isset($_SESSION['dachi_closed']) && !isset($_SESSION['dachi_expires']))
  			return false;
  
  		if(isset($_SESSION['dachi_expires']) && $_SESSION['dachi_expires'] < time())
  			return false;
  
  		return true;
  	}
code_tokens: public static function isValid ( ) { if ( isset ( $ _SESSION [ 'dachi_closed' ] ) && ! isset ( $ _SESSION [ 'dachi_expires' ] ) ) return false ; if ( isset ( $ _SESSION [ 'dachi_expires' ] ) && $ _SESSION [ 'dachi_expires' ] < time ( ) ) return false ; return true ; }
docstring: Is this session still valid?
  
  Sessions are invalidated 10 seconds after regeneration, this is to allow AJAX
  requests to complete execution before terminating the session. This method will
  return false if the 10 second period has expired.
  
  @return boolean
docstring_tokens: Is this session still valid?