Facebook canvas app - invite friends

I'm writing a Facebook iframe/canvas app and would like to give users the ability to invite friends to install this app. Currently I am using Facebook's PHP-SDK for logging in the users and all interaction with Facebook. The only things I can find about implementing the invite friends dialog either relate to FBML, which has bee deprecated; or the requests dialog: https://developers.facebook.com/docs/reference/dialogs/requests/ . The latter seems to require the use of Facebook's Javascript SDK, which has its own methods for login.

Is the JS SDK my only option, and if so, how can I use this without forcing my users to have t开发者_如何学JAVAo login again?

first approach:

function newInvite(){
                 var receiverUserIds = FB.ui({
                        method : 'apprequests',
                        message: 'Come on man checkout my applications.',
                 },
                 function(receiverUserIds) {
                          console.log("IDS : " + receiverUserIds.request_ids);
                        }
                 );
                 //http://developers.facebook.com/docs/reference/dialogs/requests/
            }

Second Approach:

<?php
     include_once "fbmain.php";
    if (isset($_REQUEST['ids'])){
        echo "Invitation Successfully Sent";
        echo '<pre>';
        print_r($_REQUEST);
        echo '</pre>';
        echo "<b>If you need to save these user ids then save these to database <br />then redirect user to the apps.facebook.com/yourapp url</b>";
        $string = "<script type='text/javascript'>top.location.href='{$fbconfig['appBaseUrl']}'; </script>";
        echo "Use the following javascript code to redirect user <br />";
        echo htmlentities($string, ENT_QUOTES);
    }
    else {
?>
<fb:serverFbml style="width: 500px;">
    <script type="text/fbml">
      <fb:fbml>
          <fb:request-form
                    action="<?=$fbconfig['baseUrl']?>/invite.php"
                    target="_top"
                    method="POST"
                    invite="true"
                    type="Demo Application  Learning API"
                    content="Checkout this demo application and learn iframe base facebook application development. <fb:req-choice url='<?=$fbconfig['appBaseUrl']?>' label='Accept' />"
                    >

                    <fb:multi-friend-selector
                    showborder="false"
                    actiontext="Checkout this demo application">
        </fb:request-form>
      </fb:fbml>
    </script>
  </fb:serverFbml>
<?php } ?>

third approach(using PHP-SDK):

     $app_id = "YOUR_APP_ID";

     $canvas_page = "YOUR_CANVAS_PAGE_URL";

     $message = "Would you like to join me in this great app?";

     $requests_url = "http://www.facebook.com/dialog/apprequests?app_id=" 
            . $app_id . "&redirect_uri=" . urlencode($canvas_page)
            . "&message=" . $message;

     if (empty($_REQUEST["request_ids"])) {
        echo("<script> top.location.href='" . $requests_url . "'</script>");
     } else {
        echo "Request Ids: ";
        print_r($_REQUEST["request_ids"]);
     }
?>

Yes - currently the FB JS requests dialog is the only way. And your users won't need to authenticate with your app - in fact they won't need to authenticate with it all. I have a jsfiddle example with code you can look at, but all you need to specify is your app id.

currently (as of v2.3) there is no way for canvas app's that are not games to invite users.

Can non-game app use FB apprequests dialog in FB v2