qimall/backend/modules/admin/services/BaseService.php

<?php

namespace backend\modules\admin\services;

use yii\base\BaseObject;

/**
 * Base Service
 * @package backend\modules\admin\services
 */
class BaseService extends BaseObject
{
    /**
     * @var string
     */
    protected $error = '';

    /**
     * @return false
     */
    public function error($msg): bool
    {
        $this->error = $msg;
        return false;
    }

    /**
     * @return string
     */
    public function getError()
    {
        return $this->error;
    }
}