I would answer the question according to two aspects
1) Ease to learn
2) Employability in MNC
I am also working in an Indian MNC and what I would like to advise you is
If you want to learn as per employability in industry learn .Net .PHP is generally used in small companies who take projects from odesk and then outsource it...Net moreover is more versatile than PHP.
My personal suggestion to you would be learning Java because it is the most versatile language. It can be used to make a window application, website, applet etc. Moreoverwe have new framework such as Structs, hibernate etc and UI components linked to Java like SWING,SWINGX,JSF,JAVAFX,HTML5 etc which have a great demand in industry.