new user management system using ajax

sys0-code/api/verify_user.php

@@ -0,0 +1,18 @@
+<?php
+session_start();
+if (!isset($_SESSION["loggedin"]) || $_SESSION["loggedin"] !== true || $_SESSION["role"][3] !== "1") {
+    header("location: /login/login.php");
+    exit;
+}
+
+require_once "../config/config.php";
+
+$userId = $_POST['userId'];
+
+$sql = "UPDATE users SET banned = 0 WHERE id = ?";
+$stmt = $link->prepare($sql);
+$stmt->bind_param("i", $userId);
+$stmt->execute();
+$stmt->close();
+
+?>