Search list of Facebook friends - php

Question

I am trying to search a user's Facebook friends list against entries in a gamers table in an application database.
The gamers table looks like id, name, points. Eg. g_id-234567, name-john Smith, points-45. In this table a person's id, is actually their Facebook id.
I am using the following code in my Codeigniter application with the Facebook php sdk to return list of friends for the logged in user.
$friends = $facebook->api('/me/friends');
foreach ($friends["data"] as $value) {
echo $value['id'];
}
This code is in my index function of my controller, and it successfully echos the ids of all the friends of the logged in user.
How do I check if any of my Facebook friends id matches that of any gamer g_id in my gamers table.
I want to get the list of gamers who are my Facebook friends, and order this list in descending order of points witha limit of 20. This is to get the top 20 Facebook friends gamers.
I would like to use this list of the logged in user's top 20 Faccebook friends in my view.

Answer 1

Try this (If you are using mysqli)
$id = -1;
$list = array();
$stmt = $mysqli->prepare("SELECT * FROM gamers where id = ? ORDER BY points DESC LIMIT 20");
$stmt->bind_param("i", $id);
foreach($friends["data"] as $value) {
$id = $value['id'];
$stmt->execute();
$res = $stmt->get_result();
array_push($list,$res->fetch_row());
}
I hope, $list should contain the list of all facebook gamers.
Alternatively, you can use :
$friends_set = '(';
foreach($friends["data"] as $value) {
$friends_set .= $value['id'].',';
}
$new_set = preg_replace('/,$/',')',$friends_set);
$res = mysql_query("SELECT * from gamers WHERE id IN $new_set ORDER BY points DESC LIMIT 20");
while($row = mysql_fetch_array($res,MYSQLI_ASSOC) {
//do your stuff
}
Inside last loop you may traverse list of facebook gamers.