<?php  

use yii\grid\GridView;

$userProvider->pagination->pageParam = 'user-page';
$userProvider->sort->sortParam = 'user-sort';

$postProvider->pagination->pageParam = 'post-page';
$postProvider->sort->sortParam = 'post-sort';

echo '<h1>Grid Users</h1>';
echo GridView::widget([
    'dataProvider' => $userProvider,
]);

echo '<h1>Grid Posts</h1>';
echo GridView::widget([
    'dataProvider' => $postProvider,
]);