PHP code example of naka1205 / phpkoa

1. Go to this page and download the library: Download naka1205/phpkoa library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

naka1205 / phpkoa example snippets



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,function(){
    echo "PHPKoa is listening in 3000\n";
});



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)); //设置3秒超时

$router = new Router();

//正常访问
$router->get('/hello', function(Context $ctx, $next) {
    $ctx->status = 200;
    $ctx->body = "<h1>Hello World</h1>";
});

//访问超时
$router->get('/timeout', function(Context $ctx, $next) {
    yield async_sleep(5);
});

//访问出错
$router->get('/error', function(Context $ctx, $next) {
    $ctx->thrοw(500, "Internal Error");
    yield;
});

$app->υse($router->routes());

$app->listen(3000);



ne('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) {
    //设置 session
    $ctx->setSession('demo3',$vars[0]);
    //设置 cookie
    $ctx->setCookie('demo3',$vars[0]);
    $ctx->status = 200;
    $ctx->body = "post:demo3={$vars[0]}";
});
$router->put('/demo3/(\d+)', function(Context $ctx, $next, $vars) {

    //获取单个 cookie
    $cookie_demo3 = $ctx->getCookie('demo3');
    //或者
    $cookies = $ctx->cookies['demo3'];

    //获取单个 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]}";
});

//文件上传
$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);



//此处已省略 ... 

//使用第三方 HTTP 客户端类库，方便测试
use GuzzleHttp\Client;

$router = new Router();

//路由分组 
//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



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);



//此处已省略 ... 

//一维数组
$router->get('/info', function(Context $ctx) {
    $info = array("name" => "小明", "age" => 15);
    $ctx->status = 200;
    $ctx->state["title"] = "这是一个学生信息";
    $ctx->state["info"] = $info;
    yield $ctx->render(__DIR__ . "/info.html");
});



//此处已省略 ... 

//二维数组
$router->get('/table', function(Context $ctx) {
    $table = array(
        array("name" => "小明", "age" => 15),
        array("name" => "小花", "age" => 13),
        array("name" => "小刚", "age" => 17)
    );
    $ctx->status = 200;
    $ctx->state["title"] = "这是一个学生名单";
    $ctx->state["table"] = $table;
    yield $ctx->render(__DIR__ . "/table.html");
});



ned('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;
//静态文件处理 中间件
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);



namespace Models;
use think\Model;
class User extends Model
{
}



namespace Middlewares;
use Naka507\Koa\Middleware;
use Naka507\Koa\Context;
class BodyJson implements Middleware
{
    public function __construct(){
    }
    public function __invoke(Context $ctx, $next){
        yield $next;
        $pos = strpos($ctx->accept,'json');
        if ( $pos !== false ) {
            $ctx->type = 'application/json';
            $result = [ "code" => 0,  "msg" => '操作失败'];
            $data = $ctx->body;
            if ( $data ) {
                $result['code'] = 200;
                $result['msg'] = '操作成功';
                $result['data'] = $data;
            }
            $ctx->body = json_encode( $result );
        }

    }
}