需要的檔案如圖所示：

1.檢視：registered.html的主要程式碼如下：

<form method="POST" action="{:url('register')}">
	使用者
	<input type="text" id="username" name="username" class="form-control" onblur="register_name()">
</form>

2.驗證器：Vregist.php的主要程式碼如下：

namespace app\index\validate;

use think\Validate;

class Vregist extends Validate
{
    protected $rule = [
        'username'=>'require|max:20|unique:member',
    ];

    protected $message = [
        'username.require'=>'賬號不能為空',
        'username.max'=>'賬號字數設定不能超過20位',
        'username.unique'=>'該賬號已經註冊',
    ];
}
 

3.模板：UserModel.php

namespace app\index\model;
use think\Model;

class UsersModel extends Model{

}

4.控制器：register.php

public function register(){
        $user1=new UsersModel;
        $user1->username=input('username');
        $result = $this->validate($user1,'Vregist');
        if(true!==$result){
            $this->success($result);
        }
        if(request()->isPost()){
            $data1=[
                'username'=>input('username'),
                //'password'=>md5(input('password'))
            ]; 
            if(Db('member')->insert($data1){
                return $this->success('註冊成功','login/index');
            }
        }
    }