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Silex (phpday)
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Igor Wiedler
May 29, 2012
Programming
11
1.2k
Silex (phpday)
Igor Wiedler
May 29, 2012
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Transcript
None
• phpBB • Symfony2 • Silex • Composer igorw @igorwesome
None
$s=stream_socket_server('tcp://127.0.0.1:81'); while($c=stream_socket_accept($s)) fwrite($c,"HTTP/1.1 200 OK\r\nContent-Length: 2\r\n\r\nHi");
require __DIR__.'/c.php'; if (!is_callable($c = @$_GET['c'] ?: function() { echo
'Woah!'; })) throw new Exception('Error'); $c();
Silex Symfony2 μ-framework
Silex is not Symfony
Microframework
None
What? • Bare bones • Routes mapped to controllers •
The ‘C’ of ‘MVC’ • REST • Single file app (ish)
Why?
Sometimes a full-stack framework is too much for a simple
task.
simple
What makes silex special?
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
Http Kernel Interface
Response handle(Request $request)
client
request client
reponse client request
clean
PSR-0
None
Silex is not Symfony
Silex is a user interface for Symfony
require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() { return
"Hello world!"; });
Phar require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; });
Phar require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; }); = FUBAR
Composer require_once 'vendor/autoload.php'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; });
Application require_once 'vendor/autoload.php'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; });
require_once 'vendor/autoload.php'; $app = new Silex\Application(); $app->get('/', function() { return
"Hello world!"; }); Controller
$app->run();
None
<IfModule mod_rewrite.c> RewriteEngine On RewriteBase /some/path RewriteCond %{REQUEST_FILENAME} !-f RewriteCond
%{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php [QSA,L] </IfModule>
server { index index.php location / { try_files $uri $uri/
/index.php; } location ~ index\.php$ { fastcgi_pass /var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } }
Wait a minute!
Lambdas λ
$(function () { $("a").on("click", function (event) { alert("Thanks for visiting!");
}); });
PHP 5.3
$f = function ($a, $b) { return $a + $b;
}; $f(1, 2);
lazy $f = function () { exit; };
nested $f = function () { return function () {
return true; }; }; $g = $f(); $value = $g();
scope $outer = 'world'; $f = function () use ($outer)
{ $inner = 'hello'; return "$inner $outer"; }; => "hello world"
scope $helloWorld = function () { $outer = 'world'; $f
= function () use ($outer) { $inner = 'hello'; return "$inner $outer"; }; return $f(); }
passing $output = function ($info) { echo $info."\n"; }; $doStuff
= function ($output) { $output('doing some magic'); doMagic(); $output('did some magic'); };
factory $userFactory = function ($name) { return new User($name); };
// ... $user = $userFactory($_POST['name']);
event listener $emitter = new EventEmitter(); $emitter->on('user.create', function (User $user)
{ $msg = sprintf("User %s created.", $user->name); log($msg); });
Usage
$app->get('/', function () { return "Hello world!"; });
Dynamic Routing
$app->get('/hello/{name}', function ($name) use ($app) { return "Hello ".$app->escape($name); });
$app->get('/hello/{name}', function ($name) use ($app) { return "Hello ".$app->escape($name); });
Controllers
assert $app->get('/blog/{id}', function ($id) { ... }) ->assert('id', '\d+');
value $app->get('/{page}', function ($page) { ... }) ->value('page', 'index');
bind $app->get('/', function () { ... }) ->bind('homepage'); $app['url_generator']->generate('homepage')
bind $app->get('/blog/{id}', function ($id) { ... }) ->bind('blog.post'); $app['url_generator'] ->generate('blog.post',
array('id' => $id))
convert $app->get('/blog/{post}', function (Post $post) { ... }) ->convert('post', function
($post) use ($app) { $id = (int) $post; return $app['posts']->find($id); });
Before & After
$app->before(function () { ... }); $app->get('/', function () { ...
}); $app->after(function () { ... });
$app->before(function (Request $request) { $loggedIn = $request ->getSession() ->get('logged_in'); if
(!$loggedIn) { return new RedirectResponse('/login'); } });
$app->after(function (Request $request, Response $response) { // tweak the Response
});
Methods
• get • post • put • delete • head
• options
$app->get('/posts/{id}', ...); $app->post('/posts', ...); $app->put('/posts/{id}', ...); $app->delete('/post/{id}', ...);
use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; $app->post('/message', function (Request $request) { mail(
'
[email protected]
', 'New message', $request->get('body') ); return new Response('Email has been sent!', 201); });
Caching
Error Handling
use Symfony\Component\HttpFoundation\Response; $app->error(function (\Exception $e, $code) { return new Response('Whoops!',
$code); });
$app->abort(404, "Could not find the thing.");
$app['debug'] = true;
Redirecting
$app->get('/', function () use ($app) { return $app->redirect('/hello'); });
Pimple
~50 NCLOC
$container = new Pimple();
$app = new Silex\Application();
Parameters $app['some_parameter'] = 'value'; $app['asset.host'] = 'http://cdn.mysite.com/'; $app['database.dsn'] = 'mysql:dbname=myapp';
Services $app['some_service'] = function () { return new Service(); };
$service = $app['some_service'];
Dependencies $app['some_service'] = function ($app) { return new Service( $app['some_other_service'],
$app['some_service.config'] ); };
Shared $app['some_service'] = $app->share(function () { return new Service(); });
Protected $app['lambda_parameter'] = $app->protect( function ($a, $b) { return $a
+ $b; }); // will not execute the lambda $add = $app['lambda_parameter']; // calling it now echo $add(2, 3);
Exposed Services • debug • request • autoloader • routes
• controllers • dispatcher • resolver • kernel
Service Providers
interface ServiceProviderInterface { function register(Application $app); }
Core Service Providers • doctrine • form • http cache
• monolog • session • swiftmailer • symfony bridges • translation • twig • url generator • validator
3rd Party • doctrine orm • propel • pomm (postgres)
• predis • mongo • KyotoTycoon • memcache • rest • markdown • gravatar • buzz • config • solr • profiler • ...
Redis
$app->register(new PredisServiceProvider());
$app->get('/{id}', function ($id) use ($app) { $key = 'pastes:'.$id; $paste
= $app['predis']->hgetall($key); ... });
None
• smallish sites • well-defined scope • prototyping • restful
apis When to use
and many more...
None
New feature: Streaming
$app->get('/some-video', function () use ($app) { $file = $app['app.video_filename']; $stream
= function () use ($file) { readfile($file); }; return $app->stream( $stream, 200, array('Content-Type' => 'video/mpeg') ); });
New feature: Middlewares
$mustBeLogged = function (Request $request) use ($app) { if (!$app['session']->has('userId'))
{ return $app->redirect('/user/login'); } }; $app->get('/user/my-profile', function () { ... }) ->middleware($mustBeLogged);
New feature: JSON helper
$app->get('/users/{id}', function ($id) use ($app) { $user = getUser($id); if
(!$user) { $message = 'The user was not found.'; $error = array('message' => $message); return $app->json($error, 404); } return $app->json($user); });
New feature: Finish filter
$app->finish(function () { // send e-mails // very slow query
// some slow API calls });
New feature: Composer
None
{ "minimum-stability": "dev", "require": { "silex/silex": "1.0.*@dev" } } composer.json
$ php composer.phar install
require 'vendor/autoload.php';
on github fabpot/Silex fabpot/Pimple
silex.sensiolabs.org
Ω
Questions? joind.in/6391 @igorwesome speakerdeck.com /u/igorw