Souke/backend/views/user/update.php

<?php

use yii\helpers\Html;

/* @var $this yii\web\View */
/* @var $model common\models\User */

$this->title = 'Modifier un client' ;
$this->params['breadcrumbs'][] = ['label' => 'Clients', 'url' => ['index']];
$this->params['breadcrumbs'][] = ['label' => Html::encode($model->nom.' '.$model->prenom)];
$this->params['breadcrumbs'][] = 'Modifier';
?>
<div class="user-update">

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

    <?= $this->render('_form', [
        'model' => $model,
    ]) ?>

</div>