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/
Front Controller
➟
➟
Last update: 26-03-2022
Front
A single entry PHP script is called front controller design pattern.
/**
* Front Controller - front.php
*
* Until now our application has only one page.
* Let's extract the common code and create the framework.
*
* The trick is the usage of Request::getPathInfo() which ...
* removes the front controller script name.
*
* composer require symfony/http-foundation
* php -S localhost:8000 front.php
*
* http://localhost:8000/hello
* Hello World
* http://localhost:8000/bye
* Goodbye!
* http://localhost:8000/front.php
* Page not found
*/
ini_set('display_errors', 1);
require_once __DIR__.'/vendor/autoload.php';
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
$request = Request::createFromGlobals();
$response = new Response();
$map = [
'/hello' => __DIR__ . '/src/pages/hello.phtml',
'/bye' => __DIR__ . '/src/pages/bye.phtml',
];
$path = $request->getPathInfo();
if (! isset($map[$path])) {
$response->setStatusCode(404);
$response->setContent("Page not found");
} else {
ob_start();
require($map[$path]);
$response->setContent(ob_get_clean()); // Look here
}
$response->send();
View
src/pages/hello.phtml
Hello <?= htmlspecialchars(
$request->get('name', 'World'), ENT_QUOTES, 'UTF-8');
?>
Apache
With httpd server we can use .htaccess to always access front.php.
RewriteEngine on
RewriteBase /php/framework/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ front.php [L,QSA]
➥ Questions github Framework