Swoole 是一款优秀的 PHP 扩展，利用其可以实现原生 PHP 很难做到的常驻服务和异步。正好我有个 Laravel 项目可以折腾，就研究了下。

Laravel 项目是基于 composer 的，所以我先帖下我的 composer.json 中的 require 声明：

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{"require": {"php": "^7.1.3","cybercog/laravel-love": "^5.1","dingo/api": "~v2.0.0-alpha2","doctrine/dbal": "^2.8","fideloper/proxy": "^4.0","guzzlehttp/guzzle": "^6.3","infyomlabs/adminlte-templates": "5.6.x-dev","infyomlabs/laravel-generator": "5.6.x-dev","jeroennoten/laravel-adminlte": "^1.23","laravel/framework": "5.6.*","laravel/tinker": "^1.0","laravelcollective/html": "^5.6.0","lshorz/luocaptcha": "^1.0","overtrue/laravel-lang": "v3.0.08","overtrue/laravel-wechat": "^4.0","predis/predis": "^1.1","spatie/laravel-permission": "^2.17","tymon/jwt-auth": "~1.0.0-rc.2","yajra/laravel-datatables-buttons": "^4.0","yajra/laravel-datatables-oracle": "^8.7"}
}

如果我们要开启 swoole，我们可选的包有这些：

• swooletw/laravel-swoole
• hhxsv5/laravel-s

但一般来说，项目中需要常驻容器的服务与每次均需重新构建的服务并不一样，所以我才剑走偏锋。

起步

我们需要将 public/index.php 替换成如下

<?phpuse Illuminate\Http\Request;
use Illuminate\Http\Response;define('LARAVEL_START', microtime(true));
require __DIR__ . '/../vendor/autoload.php';
$app = require_once __DIR__ . '/../bootstrap/app.php';class Laravel
{/*** Illuminate\Foundation\Application** @var \Illuminate\Foundation\Application*/public $app;/*** App\Http\Kernel** @var \App\Http\Kernel*/public $kernel;/*** App\Http\Requests\Request** @var \App\Http\Requests\Request*/public $request;/*** Illuminate\Http\JsonResponse** @var \Illuminate\Http\JsonResponse*/public $response;/*** 构造** @param \Illuminate\Foundation\Application $app*/public function __construct(\Illuminate\Foundation\Application $app){$this->app = $app;}/*** RUN** @return void*/public function run(){\Swoole\Runtime::enableCoroutine(true);$http = new swoole_http_server('127.0.0.1', '80');$http->set(['document_root' => public_path('/'),'enable_static_handler' => true,]);$http->on('request', function ($req, $res) {try {$kernel = $this->app->make(Illuminate\Contracts\Http\Kernel::class);$get = $req->get ?? [];$post = $req->post ?? [];$input = array_merge($get, $post);$cookie = $req->cookie ?? [];$files = $req->files ?? [];$server = $req->server ?? [];$request = Request::create($req->server['request_uri'], $req->server['request_method'], $input, $cookie, $files, $server);if (isset($req->header['x-requested-with']) && $req->header['x-requested-with'] == "XMLHttpRequest") {$request->headers->set('X-Requested-With', "XMLHttpRequest", true);}if (isset($req->header['accept']) && $req->header['accept']) {$request->headers->set('Accept', $req->header['accept'], true);}$response = $kernel->handle($request);$res->status($response->getStatusCode());foreach ($response->headers->allPreserveCaseWithoutCookies() as $name => $values) {foreach ($values as $value) {$res->header($name, $value, false);}}foreach ($response->headers->getCookies() as $cookie) {$res->header('Set-Cookie', $cookie->getName() . strstr($cookie, '='), false);}dump(time());$res->end($response->getContent());$this->app->forgetInstance('request');} catch (\throwable $e) {echo $e->getMessage();echo PHP_EOL;echo $e->getFile();echo PHP_EOL;echo $e->getLine();echo PHP_EOL;}});$http->start();}
}(new Laravel($app))->run();

运行时发现大多数页面均没有问题，只有几个用了 infyomlabs/laravel-generator 产生的列表页，AJAX 拉取 JSON 时却返回了 HTML。

排查

在有问题页面的 controller 代码中，找到如下

  /*** Display a listing of the Star.** @param StarDataTable $starDataTable* @return Response*/public function index(StarDataTable $starDataTable){return $starDataTable->render('stars.index');}

定位 StarDataTable::render() 到了

  /*** Process dataTables needed render output.** @param string $view* @param array $data* @param array $mergeData* @return mixed*/public function render($view, $data = [], $mergeData = []){if ($this->request()->ajax() && $this->request()->wantsJson()) {return app()->call([$this, 'ajax']);}...}

这是判断 $this->request() 是不是 XHR 请求，且 Accept 请求头声明了 application/json

而 $this->request() 实现如下

    /*** Get DataTables Request instance.** @return \Yajra\DataTables\Utilities\Request*/public function request(){return $this->request ?: $this->request = resolve('datatables.request');}

不难看出，如果第一次构建，会走到

$this->request = resolve('datatables.request');

而 resolve 的实现是啥？

if (! function_exists('resolve')) {/*** Resolve a service from the container.** @param  string  $name* @return mixed*/function resolve($name){return app($name);}
}

就是从容器中取出 datatables.request 的过程。

所以我们只需让每次请求结束，$app 容器忘掉 datatables.request 就好了

改进

增加遗忘 datatables.request

    $res->end($response->getContent());$this->app->forgetInstance('request');$this->app->forgetInstance('datatables.request');$this->app->forgetInstance(\Dingo\Api\Http\Middleware\Request::class);

完整最终版：

<?phpuse Illuminate\Http\Request;
use Illuminate\Http\Response;define('LARAVEL_START', microtime(true));
require __DIR__ . '/../vendor/autoload.php';
$app = require_once __DIR__ . '/../bootstrap/app.php';class Laravel
{/*** Illuminate\Foundation\Application** @var \Illuminate\Foundation\Application*/public $app;/*** App\Http\Kernel** @var \App\Http\Kernel*/public $kernel;/*** App\Http\Requests\Request** @var \App\Http\Requests\Request*/public $request;/*** Illuminate\Http\JsonResponse** @var \Illuminate\Http\JsonResponse*/public $response;/*** 构造** @param \Illuminate\Foundation\Application $app*/public function __construct(\Illuminate\Foundation\Application $app){$this->app = $app;}/*** RUN** @return void*/public function run(){\Swoole\Runtime::enableCoroutine(true);$http = new swoole_http_server('127.0.0.1', '80');$http->set(['document_root' => public_path('/'),'enable_static_handler' => true,]);$http->on('request', function ($req, $res) {try {$kernel = $this->app->make(Illuminate\Contracts\Http\Kernel::class);$get = $req->get ?? [];$post = $req->post ?? [];$input = array_merge($get, $post);$cookie = $req->cookie ?? [];$files = $req->files ?? [];$server = $req->server ?? [];$request = Request::create($req->server['request_uri'], $req->server['request_method'], $input, $cookie, $files, $server);if (isset($req->header['x-requested-with']) && $req->header['x-requested-with'] == "XMLHttpRequest") {$request->headers->set('X-Requested-With', "XMLHttpRequest", true);}if (isset($req->header['accept']) && $req->header['accept']) {$request->headers->set('Accept', $req->header['accept'], true);}$response = $kernel->handle($request);$res->status($response->getStatusCode());foreach ($response->headers->allPreserveCaseWithoutCookies() as $name => $values) {foreach ($values as $value) {$res->header($name, $value, false);}}foreach ($response->headers->getCookies() as $cookie) {$res->header('Set-Cookie', $cookie->getName() . strstr($cookie, '='), false);}dump(time());$res->end($response->getContent());$this->app->forgetInstance('request');//$this->app->forgetInstance('session');//$this->app->forgetInstance('session.store');//$this->app->forgetInstance('cookie');$this->app->forgetInstance('datatables.request');$this->app->forgetInstance(\Dingo\Api\Http\Middleware\Request::class);//$kernel->terminate($request, $response);} catch (\throwable $e) {echo $e->getMessage();echo PHP_EOL;echo $e->getFile();echo PHP_EOL;echo $e->getLine();echo PHP_EOL;}});$http->start();}
}(new Laravel($app))->run();

测试

比原生 laravel 确实快不少（这还有 4 句 SQL 查询） 。

注，此处给出的代码可以借鉴，但未经长期验证。且不同项目实际用到的包不同，需要在调试过程中 debug 容器中的服务提供者，和追踪代码来调优。

已知问题

• flash 闪存数据以及表单验证错误的展示有问题
• PDO 会报 Cannot execute queries while other unbuffered queries are active symfony/symfony...
• Throttle 的 IP 获取设定默认会产生问题

更多学习内容请访问：

腾讯T3-T4标准精品PHP架构师教程目录大全，只要你看完保证薪资上升一个台阶（持续更新）

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