ap = $app_path
); // Set the include path set_include_path($doc_root . $app_path); // Get common code require_once('util/tags.php'); require_once('model/database.php'); // Define some common functions function display_db_error($error_message) { global $app_path; include 'errors/db_error.php'; exit; } function display_error($error_message) { global $app_path; include 'errors/error.php'; exit; } function redirect($url) { session_write_close(); header("Location: " . $url); exit; } // Start session to store user and cart data session_start(); ?>