All functional now!!!

scripts/friendbook.sql

@@ -52,4 +52,5 @@ INSERT INTO friendList
     (username, friend, confirm)
 VALUES
     ('user2', 'user1', false),
-    ('user1', 'user3', true);
+    ('user1', 'user3', true),
+    ('user3', 'user1', true);

var/www/friends.php

@@ -23,7 +23,7 @@
                 $sql_order = "ORDER BY friend";
                 $sql_statement = $sql_select." ".$sql_from." ".$sql_where." ".$sql_order;
                 foreach($db_connection->query($sql_statement) as $row){
-                    print $row['friends']."\n";
+                    print $row['friend']."\n";
                 }
                 echo '</pre>';
             }catch(PDOException $e){