HttpFoundation组件

// framework/index.php
$input = $_GET['name'];
 
printf('Hello %s', $input);

// framework/index.php
$input = isset($_GET['name']) ? $_GET['name'] : 'World';
 
printf('Hello %s', $input);

$input = isset($_GET['name']) ? $_GET['name'] : 'World';
 
header('Content-Type: text/html; charset=utf-8');
 
printf('Hello %s', htmlspecialchars($input, ENT_QUOTES, 'UTF-8'));

// framework/test.php
class IndexTest extends \PHPUnit_Framework_TestCase
{
    public function testHello()
    {
        $_GET['name'] = 'Fabien';
 
        ob_start();
        include 'index.php';
        $content = ob_get_clean();
 
        $this->assertEquals('Hello Fabien', $content);
    }
}

{
    "require": {
        "symfony/http-foundation": "^3.0"
    }
}

// framework/index.php
require_once __DIR__.'/vendor/autoload.php';
 
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
 
$request = Request::createFromGlobals();
 
$input = $request->get('name', 'World');
 
$response = new Response(sprintf('Hello %s', htmlspecialchars($input, ENT_QUOTES, 'UTF-8')));
 
$response->send();

// the URI being requested (e.g. /about) minus any query parameters
// 
$request->getPathInfo();
 
// retrieve GET and POST variables respectively
// 分别取出GET和POST变量
$request->query->get('foo');
$request->request->get('bar', 'default value if bar does not exist');
 
// retrieve SERVER variables
// 取出SERVER变量
$request->server->get('HTTP_HOST');
 
// retrieves an instance of UploadedFile identified by foo
// 通过foo取出一个UploadedFile实例
$request->files->get('foo');
 
// retrieve a COOKIE value
// 取出一个COOKIE值
$request->cookies->get('PHPSESSID');
 
// retrieve an HTTP request header, with normalized, lowercase keys
// 通过取出一个HTTP请求头
$request->headers->get('host');
$request->headers->get('content_type');
 
$request->getMethod();    // GET, POST, PUT, DELETE, HEAD
// an array of languages the client accepts
// 客户端所能接受的语言之数组
$request->getLanguages();

$request = Request::create('/index.php?name=Fabien');

$response = new Response();
 
$response->setContent('Hello world!');
$response->setStatusCode(200);
$response->headers->set('Content-Type', 'text/html');
 
// configure the HTTP cache headers 配置HTTP缓存头
$response->setMaxAge(10);

if ($myIp === $_SERVER['REMOTE_ADDR']) {
    // the client is a known one, so give it some more privilege
    // 客户端是已知IP，因此给予更多权限
}

if ($myIp === $_SERVER['HTTP_X_FORWARDED_FOR'] || $myIp === $_SERVER['REMOTE_ADDR']) {
    // the client is a known one, so give it some more privilege
}

$request = Request::createFromGlobals();
 
if ($myIp === $request->getClientIp()) {
    // the client is a known one, so give it some more privilege
}

Request::setTrustedProxies(array('10.0.0.1'));
 
if ($myIp === $request->getClientIp(true)) {
    // the client is a known one, so give it some more privilege
}