Codeigniter 4基础教程（11）-- 注册登陆案例（1）

2023-11-01 05:59
文章标签 注册 案例 基础教程 登陆 codeigniter

本文主要是介绍Codeigniter 4基础教程（11）-- 注册登陆案例（1），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

0.创建users的数据表

CREATE TABLE `users` (`u_id` int(11) NOT NULL AUTO_INCREMENT,`u_name` varchar(255) DEFAULT NULL,`u_email` varchar(255) DEFAULT NULL,`u_password` varchar(255) DEFAULT NULL,`u_link` varchar(255) DEFAULT NULL,`u_date` datetime NOT NULL,`u_updated` datetime NOT NULL,PRIMARY KEY (`u_id`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

1.新建model，操作数据
app/Models/ModUsers.php

<?php
namespace App\Models;
use CodeIgniter\Model;
class ModUsers extends Model 
{protected $DBGroup = 'default';protected $table = 'users';protected $primaryKey = 'u_id';protected $returnType = 'array';protected $useTimestamps = true;protected $allowedFields = ['u_name','u_email','u_password','u_link'];protected $createdField = 'u_date';protected $updatedField = 'u_updated';
}

2.修改controller
app/Controllers/User.php

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');return view('signup');}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';}else{echo 'insertion fail';}}}
}

http://localhost/ci4signup/user/register
输入数据，然后查看users，数据插入操作成功。

3. 发邮件测试
PHP的邮件相关的内容与服务器有所联系，比如，SMTP的设置在云平台上和一般服务器上有所差异。鉴于操作上有点麻烦，而且不同的邮件服务器对于权限有不同的规定，PHP的邮件功能要么是测试用，要么是内部用，对外开放用的其实不多。比如，gmail的有需要对账号的安全等级进行设置，有个“Less secure app access”需要激活。这里就略过一些内容。

app/Config/emial.php，等

	public $protocol = 'smtp';/*** SMTP Server Address** @var string*/public $SMTPHost = 'smtp.gmail.com';/*** SMTP Username** @var string*/public $SMTPUser = '我的gmail邮箱';public $SMTPPass = '我的gmail邮箱密码';

这一块，我测试过，可以发到我的126邮箱里。
app/controllers/user.php

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');return view('signup');}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';}else{echo 'insertion fail';}$email = \Config\Services::email();$email->setFrom('我的gmail邮箱','Activate the account');$email->setTo($data['u_email']);$email->setSubject('Activiate your account');$email->setMessage($message);if($email->send()){echo 'Email sent successfully';}else{echo 'Fail to send email '.$email->printDebugger(['headers']);}}}
}

测试结果如下
在这里插入图片描述

4.进一步,随机生成注册链接
常见的注册过程中，服务器往往会发一封带有链接的地址到用户提供邮箱里，这里就生成一个随机地址，插入到邮件里，进行演示。

先添加一列，用来标注是否允许发送邮件。

ALTER TABLE `users` ADD `u_status` INT(5) NOT NULL DEFAULT '0' AFTER `u_updated`;

app/Controllers/User.php

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');return view('signup');}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';}else{echo 'insertion fail';}//这里就看得出u_link是个随机生成的链接。更好的实现是通过session来保存一下，并且在一定时间后自动销毁。$message = 'Please activate the account'.anchor('user/activate/'.$data['u_link'],'Activate account here','');$email = \Config\Services::email();$email->setFrom('xx@xx.com','Activate the account');$email->setTo($data['u_email']);$email->setSubject('Activiate your account');$email->setMessage($message);if($email->send()){echo 'Sent successfully';}else{$email->printDebugger(['headers']);}}}public function activate($linkhere){$user = new ModUsers();$checklink = $user->where('u_link', $linkhere)->findAll();if(count($checklink) > 0){$data['u_status'] = 1;$activateUser = $user->update($checklink[0]['u_id'],$data);if($activateUser){echo 'ok';}else{echo 'failed';}}else{echo 'expired';}}
}

注意：这里的代码仅仅做说明，我在操作过程中，126邮箱收到了内容是：

Please activate the accountActivate
account here
能看得出该链接不是个有效的www链接，复制粘贴到浏览器中，回车，会调用activate($linkhere)方法，该方法为了修改是否已经激活该链接，结果如下：
在这里插入图片描述
然后再看看数据库，会发现最后的一条数据u_status是1，成功。

5.再次扩展，杜绝重复注册
这里，以用户名为依据，杜绝重复的用户名注册。

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');return view('signup');}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);//这里就看得出u_link是个随机生成的链接。更好的实现是通过session来保存一下，并且在一定时间后自动销毁。$message = 'Please activate the account'.anchor('user/activate/'.$data['u_link'],'Activate account here','');$checkUserExists = $users->where('u_email',$data['u_email'])->findAll();if(count($checkUserExists) > 0){echo 'The email exists';}else{$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';$email = \Config\Services::email();$email->setFrom('guoxingyao@gmail.com','Activate the account');$email->setTo($data['u_email']);$email->setSubject('Activiate your account');$email->setMessage($message);if($email->send()){echo 'Email sent successfully';}else{echo 'Fail to send email '.$email->printDebugger(['headers']);}}else{echo 'insertion fail';}}}}public function activate($linkhere){$user = new ModUsers();$checklink = $user->where('u_link', $linkhere)->findAll();if(count($checklink) > 0){$data['u_status'] = 1;$activateUser = $user->update($checklink[0]['u_id'],$data);if($activateUser){echo 'ok';}else{echo 'failed';}}else{echo 'expired';}}
}

6.用session传递数据
session是CI框架常见的一个功能，在传递数据时至关重要。
$session = \Config\Services::session();是基础语法。

app/controllers/user.php

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');$session = \Config\Services::session();$data['message']=$session->getFlashdata('message');return view('signup',$data);}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$session = \Config\Services::session();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);//这里就看得出u_link是个随机生成的链接。更好的实现是通过session来保存一下，并且在一定时间后自动销毁。$message = 'Please activate the account'.anchor('user/activate/'.$data['u_link'],'Activate account here','');$checkUserExists = $users->where('u_email',$data['u_email'])->findAll();if(count($checkUserExists) > 0){$session->setFlashdata('message','The email is already used');return redirect()->to(site_url('user/newuser'));// echo 'The email exists';}else{$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';$email = \Config\Services::email();$email->setFrom('guoxingyao@gmail.com','Activate the account');$email->setTo($data['u_email']);$email->setSubject('Activiate your account');$email->setMessage($message);if($email->send()){echo 'Email sent successfully';}else{$session->setFlashdata('message','The email sending fails');return redirect()->to(site_url('user/newuser'));}}else{$session->setFlashdata('message','The insertion fails');return redirect()->to(site_url('user/newuser'));}}}}public function activate($linkhere){$user = new ModUsers();$checklink = $user->where('u_link', $linkhere)->findAll();if(count($checklink) > 0){$data['u_status'] = 1;$activateUser = $user->update($checklink[0]['u_id'],$data);if($activateUser){echo 'ok';}else{echo 'failed';}}else{echo 'expired';}}
}

http://localhost/ci4signup/user/newuser测试一下，输入一个已经存在的用户名，然后返回错误，然后再刷新一下，该错误消失。
这部分主要讲解的是利用sessoin的fladhdata进行一次错误的提示。

7.完成登陆功能
app/Views/signin.php

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Register a New User</title>
</head>
<body><?phpif(isset($message) && !empty($message)){echo '<div>'.$message.'</div>';}echo \Config\Services::validation()->listErrors();echo form_open('user/checkuser');echo 'Enter your password ', form_input('password','',''), '<br>';echo 'Enter your email ', form_input('email','',''), '<br>';echo form_submit('','Login');echo form_close();?></body>
</html>

app/controllers/user.php

<?php namespace App\Controllers;
use App\Models\ModUsers;class User extends BaseController{public function index(){echo 'I am fine';}public function register(){// echo '注册开始';helper('form');$session = \Config\Services::session();$data['message']=$session->getFlashdata('message');return view('signup',$data);}public function newuser(){$myvalues = $this->validate(['name'=>'required','email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->register();}else{//通过条件检验后，取值$myrequest = \Config\Services::request();$session = \Config\Services::session();$users = new ModUsers();// echo $myrequest->getVar('name');// echo $myrequest->getVar('email');// echo $myrequest->getVar('password');helper('text');$data['u_name'] =  $myrequest->getVar('name');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_password']  = hash('md5',$data['u_password'] );$data['u_link'] = random_string('alnum',20);//这里就看得出u_link是个随机生成的链接。更好的实现是通过session来保存一下，并且在一定时间后自动销毁。$message = 'Please activate the account'.anchor('user/activate/'.$data['u_link'],'Activate account here','');$checkUserExists = $users->where('u_email',$data['u_email'])->findAll();if(count($checkUserExists) > 0){$session->setFlashdata('message','The email is already used');return redirect()->to(site_url('user/newuser'));// echo 'The email exists';}else{$myNewuser  = $users->insert($data);if($myNewuser){echo 'make it to  insert';$email = \Config\Services::email();$email->setFrom('guoxingyao@gmail.com','Activate the account');$email->setTo($data['u_email']);$email->setSubject('Activiate your account');$email->setMessage($message);if($email->send()){echo 'Email sent successfully';}else{$session->setFlashdata('message','The email sending fails');return redirect()->to(site_url('user/newuser'));}}else{$session->setFlashdata('message','The insertion fails');return redirect()->to(site_url('user/newuser'));}}}}public function activate($linkhere){$user = new ModUsers();$checklink = $user->where('u_link', $linkhere)->findAll();if(count($checklink) > 0){$data['u_status'] = 1;$activateUser = $user->update($checklink[0]['u_id'],$data);if($activateUser){echo 'ok';}else{echo 'failed';}}else{echo 'expired';}}public function signin(){$session = \Config\Services::session();$data['message']=$session->getFlashdata('message');helper('form');return view('signin',$data);}public function checkuser(){$myrequest = \Config\Services::request();$session = \Config\Services::session();$myvalues = $this->validate(['email'=>'required','password'=>'required',]);if(!$myvalues){//没有通过条件检验return $this->signin();}else{$users = new ModUsers();helper('text');$data['u_email'] = $myrequest->getVar('email');$data['u_password'] = $myrequest->getVar('password');$data['u_link'] = random_string('alnum',20);$allUsers = $users->where('u_email',$data['u_email'])->findAll();if(count($allUsers) > 0){if($data['u_password'] == $allUsers[0]['u_password']){echo 'login invalid';}else{echo 'login valid';}}else{}}}
}

至此，一个注册登录的小例子完工。后续可能的改进包括引入css美化，js，以及代码的修改。以及登出功能:

$session->destroy();
return redirect()->to('user/signin');

齐活。

这篇关于Codeigniter 4基础教程（11）-- 注册登陆案例（1）的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/320947。

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