How does TP5.1 do mailbox verification?

for example, I want to verify that this email is legal. How do I want to verify it with TP"s own verification rules? I think the manual defines a User class We define a\ app\ index\ validate\ User validator class for User validation. is it so troublesome for the TP framework to verify mailbox usernames or something? Where should this validator class be written? Is it in the same directory as the controller? 

<?php
namespace app\index\controller;
use think\Controller;
use think\facade\Request;
use think\response;
use think\View;
use think\Validate;
class Register extends Controller
{
    public function regcheck(){
        $data=input("email");
        
    }
}
?>
Php thinkphp
Mar.04,2021

for individual verification, you can call statically 

// 
use think\facade\Validate;

Validate::isEmail('thinkphp@qq.com'); // true

if there are many things to verify, it is recommended to use validator
validator class can customize the directory, it is recommended to put it in the \ app\ index\ validate directory.

Validator class 

namespace app\index\validate;

use think\Validate;

class User extends Validate
{
    protected $rule =   [
        'name'  => 'require|max:25',
        'email' => 'email',    
    ];
    
    protected $message  =   [
        'name.require' => '',
        'name.max'     => '25',
        'email'        => '',    
    ];
    
}

used in the controller: 

namespace app\index\controller;

use think\Controller;

class Index extends Controller
{
    public function index()
    {
        $data = [
            'name'  => 'thinkphp',
            'email' => 'thinkphp@qq.com',
        ];

        $validate = new \app\index\validate\User;

        if (!$validate->check($data)) {
            dump($validate->getError());
        }
    }
}

Previous: Vue transition animation continuously triggers chaos

Next: What shell command can separate the information of multiple network cards from ifconfig?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf5b9c-31fad.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf5b9c-31fad.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?