ThinkPHP6扩展开发指南：自定义功能的实现

<?php

declare(strict_types=1);

namespace appextendmyextension;

class MyExtension
{
    public function hello()
    {
        echo "Hello, ThinkPHP!";
    }
}

<?php

declare(strict_types=1);

use thinkLoader;
use thinkApp;

$rootPath = __DIR__;
$app = App::create(false, $rootPath);

// 注册扩展命名空间
Loader::addNamespace('appextend', $rootPath.'/extend');

// 运行应用
$app->run()->send();

<?php

declare(strict_types=1);

namespace appindexcontroller;

use appextendmyextensionMyExtension;
use thinkacadeRequest;

class Index
{
    public function index()
    {
        // 实例化扩展类
        $ext = new MyExtension();

        // 调用扩展方法
        $ext->hello();

        // 获取请求参数
        $param = Request::param('name');
        echo "Hello, $param!";
    }
}

<?php

declare(strict_types=1);

namespace appextendmyextension;

use thinkacadeLog;

class MyLogger
{
    public function log($message, $level = 'info')
    {
        Log::write($message, $level);
    }
}

<?php

declare(strict_types=1);

namespace appindexcontroller;

use appextendmyextensionMyLogger;

class Index
{
    public function index()
    {
        // 实例化MyLogger类
        $logger = new MyLogger();

        // 记录日志
        $logger->log('This is a log message.');
    }
}