diff --git a/auth.php b/auth.php
new file mode 100644
index 0000000..457ed9e
--- /dev/null
+++ b/auth.php
@@ -0,0 +1,29 @@
+<?php
+// Start session if not already started
+if (session_status() === PHP_SESSION_NONE) {
+    session_start();
+}
+
+function check_auth() {
+    if (!isset($_SESSION['role']) || !isset($_SESSION['user_id'])) {
+        header('Location: login.php');
+        exit();
+    }
+    return true;
+}
+
+function get_user_role() {
+    return $_SESSION['role'] ?? null;
+}
+
+function get_user_id() {
+    return $_SESSION['user_id'] ?? null;
+}
+
+function get_user_name() {
+    return $_SESSION['user_name'] ?? 'User';
+}
+
+function is_logged_in() {
+    return isset($_SESSION['role']) && isset($_SESSION['user_id']);
+}
\ No newline at end of file