1. Go to this page and download the library: Download triopsi/maintenance library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
triopsi / maintenance example snippets
$this->addPlugin('Maintenance');
// In your App Controller Class (/src/Controller/AppController)
public function initialize() {
...
$this->loadComponent( 'Maintenance.Maintenance' );
}