test1/public/basic/views/site/settings.php

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $model app\models\TestUsers */
/* @var $form ActiveForm */
/* @var $model app\models\UpdateForm */
?>

<div class="site-account">

    <h1><?= Yii::t('app', 'My profile')?></h1>
    <h3> <?= Yii::$app->user->identity->forename.' '.Yii::$app->user->identity->surname ?></h3>
    <h3>Username: <?= Yii::$app->user->identity->username ?></h3>

    <?php if(Yii::$app->session->hasFlash('success')){
        echo '<div class="alert alert-success" role="alert">'.Yii::$app->session->getFlash('success').'</div>';
    }
    ?>

    <?php $form = ActiveForm::begin(); ?>

    <?= $form->field($model, 'email')->textInput(['value'=>Yii::$app->user->identity->email])->label(Yii::t('app', 'Email'))?>
    <?= $form->field($model, 'phone')->textInput(['value'=>Yii::$app->user->identity->phone])->label(Yii::t('app', 'Phone'))?>
    <?= $form->field($model, 'lang')->dropdownList($languages)->label(Yii::t('app', 'Language')) ?>
    <div class="form-group">
        <?= Html::submitButton(Yii::t('app', 'Submit'), ['class' => 'btn btn-success']) ?>
    </div>
    <?php ActiveForm::end(); ?>

</div><!-- site-account -->