- include('../src/validate.php');
- include('../functions/array.php');
- include('../functions/page_header.php');
- include('../functions/display_messages.php');
- include('../functions/addressbook.php');
+ require_once('../src/validate.php');
+ require_once('../functions/array.php');
+ require_once('../functions/display_messages.php');
+ require_once('../functions/addressbook.php');