1. Go to this page and download the library: Download thrieu/yii2-grid-view-state 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/ */
thrieu / yii2-grid-view-state example snippets
namespace \app\widgets;
use thrieu\grid\FilterStateInterface;
use thrieu\grid\FilterStateTrait;
class GridView extends \yii\grid\GridView implements FilterStateInterface {
use FilterStateTrait;
}