title: What would be a good noop for PhP
body: <p>Sometimes I do not want to do anything.</p>
  
  <p>I just want to have a statement so I can put break point.</p>
  
  <p>In c and objective-c we have while (false);</p>
  
  <p>Say I want to break a function</p>
  
  <pre><code>-(void)viewDidAppear:(BOOL)animated
  {
  
      [super viewDidAppear:animated];
      self.navigationItem.leftBarButtonItem=nil;
      self.navigationItem.rightBarButtonItem=nil;
  
  
      [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(updateDisplays) name: NotificationUpdateArroworLocation object:nil];
  
      PO(self.tableView.indexPathForSelectedRow);
      while(false);//I put break point here so program stop here.
  }
  </code></pre>
  
  <p>In .net we have donothing (Not sure Did I make that up?).</p>
  
  <p>What should we use in PhP?</p>