I have the code for my application in php? Can any one provide me the documentation to use this for my application? I have seen php library files, but not sure how to use that? do i need to configure my web server?

And am also planning to put invite page page on my application which pulls the list of friends so that the user of the app may have option to invite his/her friend to that application? Is it possible with the client library? 

Please help me out. 

 Thank you,

 -k