PHP非同步程式設計: 基於 PHP
實(chao)現(xi) NODEJS
web框架KOA
說明
偶然間在 GITHUB
上看到有贊官方倉庫的 手把手教你實現co與Koa 。由於此前用過 KOA
,對於 KOA
的洋蔥模型歎為觀止。不由得心血來潮的看完了整個文件,接著 CTRL+C
、CTRL+V
讓程式碼跑了起來。
文件中是基於 swoole
擴充套件進行開發,而 swoole
對 WINDOWS
並不友好,向來習慣在 WINDOWS
下開發的我一鼓作氣,將Workerman 改寫併相容了此專案。
體驗
PHPKoa Demo 是使用 PHPKoa
開發 HTTP SERVER
的一個簡單示例!
安裝
composer require naka1205/phpkoa
複製程式碼
使用
Hello World
<?php
require __DIR__ . '/vendor/autoload.php';
use Naka507\Koa\Application;
use Naka507\Koa\Context;
$app = new Application();
$app->υse(function(Context $ctx) {
$ctx->status = 200;
$ctx->body = "<h1>Hello World</h1>";
});
$app->listen(3000);
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Error
<?php
require __DIR__ . '/vendor/autoload.php';
use Naka507\Koa\Application;
use Naka507\Koa\Context;
use Naka507\Koa\Error;
use Naka507\Koa\Timeout;
use Naka507\Koa\Router;
use Naka507\Koa\NotFound;
$app = new Application();
$app->υse(new Error());
$app->υse(new NotFound());
$app->υse(new Timeout(3)); //設定3秒超時
$router = new Router();
//正常訪問
$router->get('/hello', function(Context $ctx, $next) {
$ctx->status = 200;
$ctx->body = "<h1>Hello World</h1>";
});
//訪問超時
$router->get('/timeout', function(Context $ctx, $next) {
yield async_sleep(5);
});
//訪問出錯
$router->get('/error', function(Context $ctx, $next) {
$ctx->thrοw(500, "Internal Error");
yield;
});
$app->υse($router->routes());
$app->listen(3000);
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Router
<?php
require __DIR__ . '/vendor/autoload.php';
define('DS', DIRECTORY_SEPARATOR);
use Naka507\Koa\Application;
use Naka507\Koa\Context;
use Naka507\Koa\Error;
use Naka507\Koa\Timeout;
use Naka507\Koa\Router;
$app = new Application();
$app->υse(new Error());
$app->υse(new Timeout(5));
$router = new Router();
$router->get('/demo1', function(Context $ctx, $next) {
$ctx->body = "demo1";
});
$router->get('/demo2', function(Context $ctx, $next) {
$ctx->body = "demo2";
});
$router->get('/demo3/(\d+)', function(Context $ctx, $next, $vars) {
$ctx->status = 200;
$ctx->body = "demo3={$vars[0]}";
});
$router->get('/demo4', function(Context $ctx, $next) {
$ctx->redirect("/demo2");
});
//RESTful API
$router->post('/demo3/(\d+)', function(Context $ctx, $next, $vars) {
//設定 session
$ctx->setSession('demo3',$vars[0]);
//設定 cookie
$ctx->setCookie('demo3',$vars[0]);
$ctx->status = 200;
$ctx->body = "post:demo3={$vars[0]}";
});
$router->put('/demo3/(\d+)', function(Context $ctx, $next, $vars) {
//獲取單個 cookie
$cookie_demo3 = $ctx->getCookie('demo3');
//或者
$cookies = $ctx->cookies['demo3'];
//獲取單個 session
$session_demo3 = $ctx->getSession('demo3');
//或者
$session = $ctx->session['demo3'];
$ctx->status = 200;
$ctx->body = "put:demo3={$vars[0]}";
});
$router->delete('/demo3/(\d+)', function(Context $ctx, $next, $vars) {
//清除所有 cookie
$ctx->clearCookie();
//清除所有 session
$ctx->clearSession();
$ctx->status = 200;
$ctx->body = "delete:demo3={$vars[0]}";
});
//檔案上傳
$router->post('/files/(\d+)', function(Context $ctx, $next, $vars) {
$upload_path = __DIR__ . DS . "uploads" . DS;
if ( !is_dir($upload_path) ) {
mkdir ($upload_path , 0777, true);
}
$files = [];
foreach ( $ctx->request->files as $key => $value) {
if ( !$value['file_name'] || !$value['file_data'] ) {
continue;
}
$file_path = $upload_path . $value['file_name'];
file_put_contents($file_path, $value['file_data']);
$value['file_path'] = $file_path;
$files[] = $value;
}
$ctx->status = 200;
$ctx->body = json_encode($files);
});
$app->υse($router->routes());
$app->listen(3000);
複製程式碼
<?php
//此處已省略 ...
//使用第三方 HTTP 客戶端類庫,方便測試
use GuzzleHttp\Client;
$router = new Router();
//路由分組
//http://127.0.0.1:5000/curl/get
//http://127.0.0.1:5000/curl/post
//http://127.0.0.1:5000/curl/put
//http://127.0.0.1:5000/curl/delete
$router->mount('/curl', function() use ($router) {
$client = new Client();
$router->get('/get', function( Context $ctx, $next ) use ($client) {
$r = (yield $client->request('GET', 'http://127.0.0.1:3000/demo3/1'));
$ctx->status = $r->getStatusCode();
$ctx->body = $r->getBody();
});
$router->get('/post', function(Context $ctx, $next ) use ($client){
$r = (yield $client->request('POST', 'http://127.0.0.1:3000/demo3/2'));
$ctx->status = $r->getStatusCode();
$ctx->body = $r->getBody();
});
$router->get('/put', function( Context $ctx, $next ) use ($client){
$r = (yield $client->request('PUT', 'http://127.0.0.1:3000/demo3/3'));
$ctx->status = $r->getStatusCode();
$ctx->body = $r->getBody();
});
$router->get('/delete', function( Context $ctx, $next ) use ($client){
$r = (yield $client->request('DELETE', 'http://127.0.0.1:3000/demo3/4'));
$ctx->status = $r->getStatusCode();
$ctx->body = $r->getBody();
});
});
//http://127.0.0.1:5000/files
$router->get('/files', function(Context $ctx, $next ) {
$client = new Client();
$r = ( yield $client->request('POST', 'http://127.0.0.1:3000/files/2', [
'multipart' => [
[
'name' => 'file_name',
'contents' => fopen( __DIR__ . '/file.txt', 'r')
],
[
'name' => 'other_file',
'contents' => 'hello',
'filename' => 'filename.txt',
'headers' => [
'X-Foo' => 'this is an extra header to include'
]
]
]
]));
$ctx->status = $r->getStatusCode();
$ctx->body = $r->getBody();
});
// $router->get('/curl/(\w+)', function(Context $ctx, $next, $vars) {
// $method = strtoupper($vars[0]);
// $client = new Client();
// $r = (yield $client->request($method, 'http://127.0.0.1:3000/demo3/123'));
// $ctx->status = $r->getStatusCode();
// $ctx->body = $r->getBody();
// });
$app->υse($router->routes());
$app->listen(5000);
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Template
<body>
<h1>{title}</h1>
<p>{time}</p>
</body>
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<?php
require __DIR__ . '/vendor/autoload.php';
use Naka507\Koa\Application;
use Naka507\Koa\Context;
use Naka507\Koa\Error;
use Naka507\Koa\Timeout;
use Naka507\Koa\Router;
$app = new Application();
$app->υse(new Error());
$app->υse(new Timeout(5));
$router = new Router();
$router->get('/hello', function(Context $ctx) {
$ctx->status = 200;
$ctx->state["title"] = "HELLO WORLD";
$ctx->state["time"] = date("Y-m-d H:i:s", time());;
yield $ctx->render(__DIR__ . "/hello.html");
});
$app->υse($router->routes());
$app->listen(3000);
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<body>
<p>{title}</p>
<table border=1>
<tr><td>Name</td><td>Age</td></tr>
<!-- BEGIN INFO -->
<tr>
<td> {name} </td>
<td> {age} </td>
</tr>
<!-- END INFO -->
</table>
</body>
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<?php
//此處已省略 ...
//一維陣列
$router->get('/info', function(Context $ctx) {
$info = array("name" => "小明", "age" => 15);
$ctx->status = 200;
$ctx->state["title"] = "這是一個學生資訊";
$ctx->state["info"] = $info;
yield $ctx->render(__DIR__ . "/info.html");
});
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<body>
<p>{title}</p>
<table border=1>
<tr><td>Name</td><td>Age</td></tr>
<!-- BEGIN TABLE -->
<tr>
<td> {name} </td>
<td> {age} </td>
</tr>
<!-- END TABLE -->
</table>
</body>
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<?php
//此處已省略 ...
//二維陣列
$router->get('/table', function(Context $ctx) {
$table = array(
array("name" => "小明", "age" => 15),
array("name" => "小花", "age" => 13),
array("name" => "小剛", "age" => 17)
);
$ctx->status = 200;
$ctx->state["title"] = "這是一個學生名單";
$ctx->state["table"] = $table;
yield $ctx->render(__DIR__ . "/table.html");
});
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中介軟體
靜態檔案處理 中介軟體 PHPKoa Static
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PHPkoa Static</title>
<link rel="stylesheet" href="/css/default.css">
</head>
<body>
<img src="/images/20264902.jpg" />
</body>
</html>
複製程式碼
<?php
require __DIR__ . '/vendor/autoload.php';
defined('DS') or define('DS', DIRECTORY_SEPARATOR);
use Naka507\Koa\Application;
use Naka507\Koa\Context;
use Naka507\Koa\Error;
use Naka507\Koa\Timeout;
use Naka507\Koa\NotFound;
use Naka507\Koa\Router;
//靜態檔案處理 中介軟體
use Naka507\Koa\StaticFiles;
$app = new Application();
$app->υse(new Error());
$app->υse(new Timeout(5));
$app->υse(new NotFound());
$app->υse(new StaticFiles(__DIR__ . DS . "static" ));
$router = new Router();
$router->get('/index', function(Context $ctx, $next) {
$ctx->status = 200;
yield $ctx->render(__DIR__ . "/index.html");
});
$app->υse($router->routes());
$app->listen(3000);
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