//　友達の名前とIDを表示し、あるID同士が友達かどうかを判定
<?php

require_once '';

$appapikey = '';
$appsecret = '';
$facebook = new Facebook($appapikey, $appsecret);
$user_id = $facebook->require_login();

echo "<p>Hello, <fb:name uid=\"$user_id\" useyou=\"false\" />!</p>";

echo "<p>User Info:";
$uinfo = $facebook->api_client->users_getInfo($user_id, 'uid,name,pic_square,hometown_location,username,birthday,about_me,locale');
$uinfo = array_slice($uinfo[0], 0, 25);
foreach ($uinfo as $u_info) {
echo "$u_info";
echo "<br />";
}
echo "</p>";

echo "<p>Friends:";
echo "<br />";
$friends = $facebook->api_client->friends_get();
$i=0;
  foreach ($friends as $friend)
  {
    $personArray = $facebook->api_client->users_getInfo($friend,"name");
    $person[$i]=$personArray[0];
    $i++;
  }


  $i=0;
  foreach ($person as $f)
  {
    echo " ".$f['name'];

    echo "<br />";
    $i++;
  }
  echo "<br />";
echo "</p>";

echo "<p>friends_getMutualFriends:";
echo "<br />";
$friends = $facebook->api_client->friends_get();
$i=0;
  foreach ($friends as $friend)
  {
    $personArray = $facebook->api_client->users_getInfo($friend,"uid");
    $person[$i]=$personArray[0];
    $i++;
  }


  $i=0;
  foreach ($person as $f)
  {
    echo "".$f['uid'];

    echo "<br />";
    $i++;
  }
  echo "<br />";
echo "</p>";

echo "<p>friends_areFriends:";
echo "<br />";

$users1 = array(100001869363827,100000124019115);
$users2 = array(100001860672805,100001970495861);
$arrstat = array('not friend', 'friend');

$check = $facebook->api_client->friends_areFriends($users1,$users2);
print_r($check);
echo "<br />";
echo "<br />";

echo "Check Result";
echo "<br />";
for($i=0;$i<count($check);$i++){
    $uid1 = $check[$i]['uid1'];
    $uid2 = $check[$i]['uid2'];
    $stat = $check[$i]['are_friends'];
    $label = $arrstat[$stat];
    echo " {$uid1} and {$uid2} {$label} ";
    echo "<br />";
}

  ?>