"The app itself is powered by Laravel, Vue.js, Socket.io, and Node" Is there another Laravel other than the php one? Seems odd to roll out with both php and node.js. I don't know why you would need both. Edit: Yes, I see each has it's strengths. But that has to drive a lot of doing the same thing twice, in two languages...they both interact with the same data. I would guess time-to-market is important at launch to re…
Nothing wrong with PHP, just use the right tool for the job, and the right tool is based on existing skills, time to market, requirements, etc. If PHP fits the bill, use PHP
For websockets, as an example, HHVM+proxygen should be as performant as node. Or, node should be roughly as good as php for developer speed on the normal, not-websockets side of the house.