PHP源码CodeIgniter,新加坡vps云,最好的5家欧洲vps,VPS配置硬防,linode vps建站

🗣 Wd提问: PHP源码CodeIgniter

🤖 Ai回答:
以下是一份基于 CodeIgniter 4 的极简入门示例源码，包含控制器、模型、视图及路由配置，可直接放入 CI4 项目根目录运行（需已正确安装 CI4 并配置好数据库）。

1、数据库表（MySQL）
sql
CREATE TABLE `news` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(128) NOT NULL,
`slug` varchar(128) NOT NULL,
`body` text NOT NULL,
PRIMARY KEY (`id`),
KEY `slug` (`slug`)
);

2、路由文件 app/Config/Routes.php
php
$routes-get('/', 'News::index');
$routes-get('news/(:segment)', 'News::view/$1');
$routes-get('news/create', 'News::create');
$routes-post('news/store', 'News::store');

3、模型 app/Models/NewsModel.php
php
<?php namespace App\Models;
use CodeIgniter\Model;

class NewsModel extends Model {
protected $table = 'news';
protected $primaryKey = 'id';
protected $allowedFields = ['title', 'slug', 'body'];
protected $useTimestamps = false;

public function getNews($slug = false) {
if ($slug === false) {
return $this-findAll();
}
return $this-where(['slug' = $slug])-first();
}
}

4、控制器 app/Controllers/News.php
php
<?php namespace App\Controllers;
use App\Models\NewsModel;

class News extends BaseController {
public function index() {
$model = new NewsModel();
$data['news'] = $model-getNews();
return view('news/index', $data);
}

public function view($slug = null) {
$model = new NewsModel();
$data['news'] = $model-getNews($slug);
if (empty($data['news'])) {
throw new \CodeIgniter\Exceptions\PageNotFoundException('Cannot find news: ' 、$slug);
}
return view('news/view', $data);
}

public function create() {
return view('news/create');
}

public function store() {
$model = new NewsModel();
$slug = url_title($this-request-getPost('title'), '-', true);
$model-save([
'title' = $this-request-getPost('title'),
'slug' = $slug,
'body' = $this-request-getPost('body'),
]);
return redirect()-to('/news/' 、$slug);
}
}

5、视图文件
app/Views/news/index.php
php
<!doctype html
<html
<head<titleNews</title</head
<body
<h1News archive</h1
<?php foreach ($news as $item): ?
<h3<a href=/news/<?= esc($item['slug']) ?<?= esc($item['title']) ?</a</h3
<?php endforeach; ?
<p<a href=/news/createCreate news</a</p
</body
</html

app/Views/news/view.php
php
<!doctype html
<html
<head<title<?= esc($news['title']) ?</title</head
<body
<h1<?= esc($news['title']) ?</h1
<p<?= esc($news['body']) ?</p
<p<a href=/Back to archive</a</p
</body
</html

app/Views/news/create.php
php
<!doctype html
<html
<head<titleCreate news</title</head
<body
<h1Create news</h1
<form action=/news/store method=post
<labelTitle</label
<input type=text name=title<br
<labelBody</label
<textarea name=body</textarea<br
<button type=submitSave</button
</form
<p<a href=/Back to archive</a</p
</body
</html

6、运行
确保 `.env` 中已正确配置数据库连接：

database.default.hostname = localhost
database.default.database = ci4_demo
database.default.username = root
database.default.password =
database.default.DBDriver = MySQLi

然后启动内置服务器：

php spark serve

访问 `http://localhost:8080` 即可看到新闻列表。

Ai作答

📣 商家广告：