require_login();
// The call back url for all internal links on this page.
$appcallbackurl = 'http://www.abluestar.com/dev/facebook/';
// catch the exception that gets thrown if the cookie has an invalid session_key in it
try {
if (!$facebook->api_client->users_isAppAdded()) {
$facebook->redirect($facebook->get_add_url());
}
} catch (Exception $ex) {
// this will clear cookies for your application and
// redirect them to a login prompt
$facebook->set_user(null, null);
$facebook->redirect($appcallbackurl);
die( "can not load facebook class" );
}
echo "hello $user
";
// Get a list of all your friends
// This list can be returned in a serveral different formats including XML,
// The friends_get converts the XML response in to an array for me and returns it.
// If there was an error, friends would be set to false.
// Example response
/**
21005955
129500593
305200581
*/
$friends = $facebook->api_client->friends_get();
if( $friends == FALSE ) {
die( "could not retive this users friends list" );
}
// Get the names of all my friends by there UID numbers
// We generate a request for all your friends names.
// We could request each users names one by one or we can save some time and some DB resources by
// requesting all our friends names in one big request.
$uids1 = '';
foreach( $friends as $friend ) {
$uids1 .= $friend .", ";
}
$uids1 .= "0";
// Make the request for a users information.
// You must be able to see this users information from your account.
// Unless you are all ready friends you will not be able to get there name.
$users_getInfo = $facebook->api_client->users_getInfo( $uids1, "name" );
// Example response
//
/*
732945108
Peter Dillon
*/
// Re orginze the data in to a useable format.
$Offset = 0 ;
foreach( $friends as $friend ) {
$Names[$friend] = $users_getInfo[$Offset++]['name'] ;
}
// Query each user with every other user in your friends list and check to see if they are friends.
// There will be n*n queries to the database, this will take the bulk of the proccess time.
// Get the popularity between my friends
foreach( $friends as $friend ) {
$yourFriends[$friend] = 0 ; // Set the initial count of friends to zero
$uids1 = ''; // Set the inial query line to nothing.
$uids2 = ''; // Set the inial query line to nothing.
foreach( $friends as $friend2 ) {
if( $friend == $friend2 ) {
continue;
}
$uids1 .= $friend . ", ";
$uids2 .= $friend2 . ", ";
}
$uids1 .= '0';
$uids2 .= '0';
// We want to check if two my friends are friends with each other.
// to do this we use the friends_areFriends function that returns a bool if they are friends.
// Example response
// http://wiki.developers.facebook.com/index.php/Friends.areFriends
/**
510848501
504905428
0
*/
$friends_areFriends = $facebook->api_client->friends_areFriends( $uids1, $uids2 );
// Re orginze the data in to a more useable format.
$Offset = 0 ;
foreach( $friends as $friend2 ) {
if( $friend == $friend2 ) {
continue;
}
if( $friends_areFriends[$Offset++]["are_friends"] == '1' ) {
$yourFriends[$friend]++;
}
}
}
// array_combine — Creates an array by using one array for keys and another for its values
// Sort the list by the number of commen friends then display the list with the friends name instead of there ID.
echo "
";
arsort( $yourFriends ) ;
$friendsIds = array_keys( $yourFriends );
foreach ( $friendsIds as $Id ) {
echo "". $Names[$Id] . ": " .$yourFriends[ $Id ] . "\n";
}
echo "";