facebook graph array'dan veri cikarmak

Slm,
yapmak istedigim su

<?php
$purl = 'http://www.example.com';
$request_url ="https://graph.facebook.com/comments/?ids=$purl";
$json_string = file_get_contents($request_url);
$get = json_decode($json_string, true);
foreach ($get as $key => $val1) {
 foreach ($val1 as $key => $val2) {
 foreach ($val2 as $key => $val) {
 echo "<a href=\"http://www.facebook.com/profile.php?id=".$val["from"]["id"]."\" target=\"_blank\"><img width=\"80\" height=\"80\" src=\"http://graph.facebook.com/".$val["from"]["id"]."/picture\" /></a><p>".$val["message"]."</p><small>Facebook yorum <a href=\"http://www.facebook.com/profile.php?id=".$val["from"]["id"]."\" target=\"_blank\">".$val["from"]["name"]."</a> Tarih: ".$val["created_time"].". Begeni: ".$val["likes"]."</small>";
 }}}
?>

bi turlu facebook'tan gelen verileri degiskenlere ceviremiyorum.
Yardim edin arkadaslar lütfen

EDIT: Veriler suradan geliyor:
http://graph.facebook.com/comments/?...ww.example.com

<?php
$purl = 'http://www.example.com';
$request_url ="https://graph.facebook.com/comments/?ids=$purl";
$json_string = file_get_contents($request_url);
$get = json_decode($json_string, true);
foreach ($get[$purl]['comments']['data'] as $key => $val) {
    echo "<a href=\"http://www.facebook.com/profile.php?id=".$val["from"]["id"]."\" target=\"_blank\"><img width=\"80\" height=\"80\" src=\"http://graph.facebook.com/".$val["from"]["id"]."/picture\" /></a><p>".$val["message"]."</p><small>Facebook yorum <a href=\"http://www.facebook.com/profile.php?id=".$val["from"]["id"]."\" target=\"_blank\">".$val["from"]["name"]."</a> Tarih: ".$val["created_time"].". Begeni: ".$val["user_likes"]."</small>"; 
}
?>