How to use the token of ThinkPhp framework in PHP

1. The use of token in the ThinkPhp framework

1. First, add two fields token and time_out in the users table of the database

token is used to store the user's token

time_out is used to set the expiration time of the user token

2. Create a function

checkToekn($token)

Function is used for verification Whether the token exists, and update the token.

public function checkToken($token)
    {
        $user = new \app\index\model\Users();
        $res = $user->field('time_out')->where('token', $token)->select();
 
        if (!empty($res)) {
            //dump(time() - $res[0]['time_out']);
            if (time() - $res[0]['time_out'] > 0) {
     
                return 90003; //token长时间未使用而过期，需重新登陆
            }
            $new_time_out = time() + 604800; //604800是七天
            $res = $user->isUpdate(true)
                ->where('token', $token)
                ->update(['time_out' => $new_time_out]);
            if ($res) {
     
                return 90001; //token验证成功，time_out刷新成功，可以获取接口信息
            }
        }
 
        return 90002; //token错误验证失败
}

3. Create function

douserLogin($username,$password)

to verify username and password, log in, and return token information.

  public function douserLogin()
    {
        $user = new \app\index\model\Users();
        $userisset = $user->where('username', $username)->find();
        if ($userisset == null) {
            return json_decode('{"user":"' . $username . '","code":"400","msg":"用户不存在"}');
        } else {
            $userpsisset = $user
                ->where('username', $username)
                ->where('password', sha1(md5($password)))->find();
 
            if ($userpsisset == null) {
                return json_decode('{"user":"' . $username . '","code":"401","msg":"密码错误"}');
            } else {
                //session('user', $username);
                $token = $this->makeToken();
                $time_out = strtotime("+7 days");
                $userinfo = ['time_out' => $new_time_out,
                    'token' => $token];
                $res = $user->isUpdate(true)
                    ->where('username', $username)
                    ->update($userinfo);
                if ($res) {
                    return json_decode('{"user":"' . $username . '","toekn":'.$token.' "code":"0","msg":"登录成功"}');
                }
            }
        }
}

2. The concept of Token

Token is when the client frequently requests data from the server, and the server frequently queries the database for the username and password to determine whether the username and password are correct. No, and make corresponding prompts. In this context, token came into being.

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