Ok so you’re saying that by removing the /* */ its breaking your forum? I honestly can’t see anything wrong with the code you’ve pasted, although for future reference if you could just paste the code directly into your post, you can then use syntax highlighter to get it to display nicely.. It’s a lot easier to read and diagnose than a screenshot!
Can you try clearing your PHP error log, run the site with the code back to normal (the way it breaks your page) and then check the log for any errors?
Only pay attention to errors, not warnings. It should give us an idea of what the problem is in this case.