How To Build Business Directory Using Php Mysql?

I want to create MMOG.for frontend i am using playn and for backend i am using php/mysql. now i have to build first json web service in backend. i am unable to understand how json can help me.i dont know json.please help me?

• i want to learn how i can implement json with my php/mysql

• Answer:

  I think you may have some wires crossed here. JSON is a standard and simple way to represent hierarchical data structures in text. As such it's useful for sending data structures over a socket. See: http://www.json.org/ PHP is a programming language, which (among many other things) has support for encoding and decoding JSON to and from structures. See: http://php.net/manual/en/book.json. So, one might keep state in the database (or in the server's memory for locations and other transient information), and send this data to the client occasionally (or on demand) via a socket (or in response to an HTTP request). The format of this data would be a JSON string representing the data. I hope that helps you out. The question is very open ended.