I want to invite facebook friends to my app. via some sort of API call whether rest or PHP Sdk, so is there a way to do so. I know about multifriend selector in FBML but don't want that. Please tell that which API can be used to do so? Graph API or any other? I am using PHP so if you know some PHP API call then that is also good.
thanks in advance for assisting me.
You can use the Requests Dialog for invites. This will prompt the user for which friends to send a request/invite to. This is designed to work in iframe apps, no fbml required.
http://developers.facebook.com/docs/reference/dialogs/requests/