este es loggins.php es un respaldo por si se dana el otro

<?php  require_once 'dc.php'; 

error_reporting(0);

echo "<div class='ris'>";

if ($_SERVER["REQUEST_METHOD"] == "POST") {

// reCAPTCHA verify
$recaptchaSecretKey = '6Lf7Yw8pAAAAAMS-xv8MsdtMQRHgxQ2V-3ZSndxM';
$recaptchaResponse = $_POST['g-recaptcha-response'];

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
    'secret' => $recaptchaSecretKey,
    'response' => $recaptchaResponse
)));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
//end reCAPTCHA

if(isset($_POST['remember_me'])) {
    // Usuario marcó "Recuérdame", establecer cookie para 30 días
    setcookie('username', $_POST['username'], time() + (86400 * 30), "/");
} else {
    // Usuario no marcó "Recuérdame", eliminar cookie si existe
    if(isset($_COOKIE['username'])) {
        // Establecer el tiempo de expiración en el pasado para eliminarla
        setcookie('username', '', time() - 3600, "/");
    }
}


// Decodificar la respuesta
$responseKeys = json_decode($response, true);
    if (intval($responseKeys["success"]) !== 1) {    // CAPTCHA failed
        header("Location: user-incorrect.php?ms=3");
        exit();
    } else {
        $user = mysqli_real_escape_string($mysqli, $_POST['username']);  
        $pass = $_POST['password']; 

        // Consulta de inicio de sesión
        $sql = "SELECT user.u_code AS u_code, user.nombre, user.pswr AS password, docentes.cedula AS username, user.level AS nivel 
                FROM user INNER JOIN docentes ON docentes.d_code = user.nombre WHERE docentes.cedula = ?";
        $stmt = $mysqli->prepare($sql);
        
        $stmt->bind_param("s", $user);
        $stmt->execute();
        $result = $stmt->get_result();
        $numregis = $result->num_rows;

        if ($numregis > 0) {
            $row = $result->fetch_assoc();

            // Verificar PSWD
            if (password_verify($pass, $row['password'])) {
                session_start();
                $_SESSION['estarted'] = true;
                $_SESSION['UNI_CODE'] = $row['u_code'];
                $_SESSION['MM_Username'] = $row['username'];
                $_SESSION['MM_UserGroup'] = $row['nombre'];
                $_SESSION['MM_Level'] = $row['nivel'];
                $_SESSION['u_code']=$row['u_code'];

                switch ($_SESSION['MM_Level']) {
                    case 1: // ADMINER
                        header("Location: ../noaAdminer/pag0.php"); exit();
                    case 2: // SECRETARIAS
                        header("Location: ../noaAdmin/index.php"); exit();
                    case 3: // DOCENTES
                        header("Location: ../noaCV/index.php"); exit();
                    case 4: // PRACTICAS    
                        header("Location: ../pracVIN/index.php"); exit();
                    case 5: // VINCULACION
                        header("Location: ../noaLogos/navybar/mono/index.php"); exit();
                    case 6: // INSPECTORES
                        header("Location: ../ASISTOR/index.php"); exit();                        
                    case 8: // ALUMNOS
                        header("Location: ../noaAlumnos/index.php"); exit();
                    case 9: // ADMIN_vinc
                        header("Location: ../noaLogos/navybar/maister\index1.php"); exit();
                    default:
                        header("Location: ../index.php"); exit();
                }
            } else {
                header("Location: user-incorrect.php?ms=1"); die();
            }
        } else {
            header("Location: user-incorrect.php?ms=2"); die();
        }
        $_SESSION['estarted'] = false; 
    }
}
$mysqli->close();
?>
</div>