invoice/app/service/user/UserService.php

<?php

namespace app\service\user;

use app\model\WechatUser;
use app\service\BaseService;

class UserService extends BaseService
{

    /**
     * 随机字符串，默认长度10
     * @param int $num
     * @return string
     */
    public function setSalt(int $num = 10): string
    {
        $str = 'qwertyuiopasdfghjklzxcvbnm1234567890';
        return substr(str_shuffle($str), 10, $num);
    }

    /**
     * 密码加密
     * @param string $pwd
     * @param string $salt
     * @return string
     */
    public function setPassword(string $pwd, string $salt): string
    {
        return md5(md5($pwd . $salt) . $salt);
    }

    /**
     * 添加、修改密码
     * @param $id
     * @param $password
     * @return bool
     */
    public function savePassword($id, $password)
    {
        $salt = $this->setSalt();

        $savePassword = $this->setPassword($password, $salt);

        $data = [
            'password' => $savePassword,
            'salt' => $salt
        ];

        $User = new WechatUser();
        return $User->where('id', $id)->save($data);
    }
}