pp_cms/webApp/backend/views/site/error.php

<?php
/**
 * Author: lf
 * Blog: https://blog.feehi.com
 * Email: job@feehi.com
 * Created at: 2016-04-14 15:44
 */

/**
 * @var $code integer
 * @var $message string
 */
?>
<div class="middle-box text-center animated fadeInDown">
    <h1><?= $code ?></h1>
    <h3 class="font-bold"><?= $name ?></h3>

    <div class="error-desc">
        <?= $message ?>
        <form target="_blank" class="form-inline m-t" action="http://www.baidu.com/s" role="form">
            <div class="form-group">
                <input type="text" name="wd" class="form-control"
                       placeholder="<?= yii::t('app', 'Please Enter the Question') ?> …">
            </div>
            <button type="submit" class="btn btn-primary"><?= yii::t('app', 'Search') ?></button>
        </form>
    </div>
</div>