Souke/backend/views/user/index.php

<?php

use yii\helpers\Html;
use yii\grid\GridView;

/* @var $this yii\web\View */
/* @var $dataProvider yii\data\ActiveDataProvider */

$this->title = 'Utilisateurs';
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="user-index">

    <h1><?= Html::encode($this->title) ?></h1>

    <p>
        <?= Html::a('Ajouter un utilisateur', ['create'], ['class' => 'btn btn-success']) ?>
        <?= Html::a('<span class="glyphicon glyphicon-envelope"></span> Liste des emails', ['mail'], ['class' => 'btn btn-default']) ?>
    </p>

    <?= GridView::widget([
        'dataProvider' => $dataProvider,
        'columns' => [
            //['class' => 'yii\grid\SerialColumn'],

            //'id',
            //'username',
            //'auth_key',
            //'password_hash',
            //'password_reset_token',
            // 'email:email',
            // 'status',
            // 'created_at',
            // 'updated_at',
             'nom',
             'prenom',
             //'telephone',
    		 //'email',
             //'confiance',

            ['class' => 'yii\grid\ActionColumn'],
        ],
    ]); ?>

</div>