Its very simple, be prepared for common php questions & practice making a web service using slim framework. Also knowing angular would be a added advantage. Mostly they will give you a practical test like creating a registration and login form.

First telephonic then Coding round of interview then final discussion round. But they will make excuses of rejection even after solving all the questions. Do not waste your time. Instead work on your projects..i'd recommend coding projects practise rather instead of travelling all the way to goregaon. The review is 100 % genuine. This thing is everwhere nowadays...the employers are playing games everywhere with our lives...beware !