ASP.net vs PHP (What to choose) [closed]

This is impossible to answer and has been brought up many many times before. Do a search, read those threads, then pick the framework you and your team have experience with.

• What advantages does PHP have over ASP.NET?
• In Web Development - What ASP.net can do that PHP cannot do?
• What are the fundamental differences between ASP.net and PHP?
• The use of PHP vs ASP.net

You can have great success and great performance either way. MSDN runs off of ASP.NET so you know it can perform well. PHP runs a lot of the top websites in the world. The same can be said of the databases as well. You really need to choose based upon your skills, the skills of your team, possible specific features that you need/want that one does better than the other, and even the servers that you want to run this site.

If I were building it, I would lean towards PHP because probably everything you want to do has been done before (with code examples how) and because hosting is so much easier to get (and cheaper because you don't have the licensing issues to deal with compared to Windows hosting). For the same reason, I would choose MySQL as well. It is a great database platform and the price is right.

There are a couple of topics that might provide you with an answer. You could also run some tests yourself. Doesn't see too hard to get some loops started and adding a timer to calculate the execution time ;-)