title: Debugging in HHVM?
body: <p>When running my PHP scripts in HHVM I see that I can pass a debug-host and debug-port arguments, but I can't seem to work out exactly what it does and how to use it.</p>
  
  <p>Are those arguments for debugging HHVM itself (or maybe the compiled PHP itself) or is it for debugging the PHP script? That is to say, is it for debugging the way
  that HHVM works, or is it for debugging as I would normally do with XDebug, say?</p>
  
  <p>At first I tried to connect it to my IDE that is set up for XDebug, but that doesn't seem to do anything so without going on a wild goose chase I thought I would ask here.</p>
  
  <p>What are the debug arguments for HHVM for, exactly, and how can I use them to debug my PHP scripts in HHVM please?</p>