Detect PHP session end with Vue

When you use axios for example for your requests you can use interceptors to check for any 401 Unauthorized responses. Whenever you get a 401 Unauthorized you should be redirected to the login page. Your setup might look like this

const api = axios.create({
  baseURL: `${config.host}`,
  timeout: 10000,
  headers: {
    'X-Requested-With': 'XMLHttpRequest',
    'Content-Type': 'application/json',
  },
  responseType: 'json'
});

api.interceptors.request.use((config) => {
  config.headers.Authorization = `Bearer ${auth.getToken()}`;

  return config;
}, error => Promise.reject(error));

api.interceptors.response.use(response => response, (error) => {
  const statusCode = error.response.status

  if (statusCode === 401) {
    auth.deleteToken();

    routes.push({ name: 'login' });

    return Promise.reject(error);
  }
});

Well this is the basic gist of it! Note that I'm using the vue-router here as well. So the only thing you need to do is make sure that your api return a response with 401 ;)