No longer need to put the database server connection info in each page

var/www/debug.php

@@ -1,10 +1,6 @@
 <?php
     session_start();
-
-    $server = "localhost";
-    $database = "friendBook";
-    $username = "web";
-    $password = "Password456";
+    require 'db_connection.php';
 ?>
 
 <html>