Awesome tool to help developers debug the code

It’s much easier to use Ray than do all the error_log() and var_dump() calls on a page. You do not interrupt the flow (but you can pause it!) although receive all the needed information.

It’s less powerful than Xdebug (although they have different purposes and use cases), but more flexible than printing debug output on a page/debug-bar/error log.

I highly recommend it.