Symfony 2.0 on PHP 5.3

Symfony 2.0 on PHP 5.3! Fabien Potencier

Fabien Potencier •  Serial entrepreneur and developer by passion •  Founder of Sensio (in 1998) –  A services and consulting company specialized in Web technologies and Internet marketing (France and USA) –  70 people –  Open-Source specialists –  Big corporate customers –  Consulting, training, development, web design, … and more –  Sponsor of a lot of Open-Source projects like symfony and Doctrine

Fabien Potencier •  Creator and lead developer of symfony… •  and creator and lead developer of some more: –  symfony components –  Swift Mailer : Powerful component based mailing library for PHP –  Twig : Fexible, fast, and secure template language for PHP –  Pirum : Simple PEAR Channel Server Manager –  Sismo : PHP continuous integration server –  Lime : Easy to use unit testing library for PHP –  Twitto : A web framework in a tweet –  Twittee : A Dependency Injection Container in a tweet –  Pimple : A small PHP 5.3 dependency injection container

Fabien Potencier •  Read my technical blog: http://fabien.potencier.org/ •  Follow me on Twitter: @fabpot •  Fork my code on Github: http://github.com/fabpot/

How many of you have used symfony? 1.0? 1.1? 1.2? 1.3?

symfony 1.0 – January 2007 •  Started as a glue between existing Open-Source libraries: – Mojavi (heavily modiﬁed), Propel, Prado i18n, … •  Borrowed concepts from other languages and frameworks: – Routing, CLI, functional tests, YAML, Rails helpers… •  Added new concepts to the mix – Web Debug Toolbar, admin generator, conﬁguration cascade, …

symfony 1.2 – November 2008 •  Decoupled but cohesive components: the symfony platform –  Forms, Routing, Cache, YAML, ORMs, … •  Controller still based on Mojavi –  View, Filter Chain, …

Roadmap •  1.0 – January 2007 •  1.1 – June 2008 •  1.2 – November 2008 •  1.3 – November 2009 •  1.4 – Last 1.X version (LTS release : 3 years of support) – same as 1.3 but without deprecated features •  Version 2.0 – Hopefully at the end of 2010

Symfony 2.0 •  PHP 5.3 only - http://sf-to.org/sf20onPHP53 •  Same Symfony core components (updated for PHP 5.3) •  Diﬀerent controller implementation •  Oh! Symfony now takes a capital S!!!

Symfony Components •  Standalone components •  Packaged individually •  Upcoming dedicated website –  http://components.symfony-project.org/ •  Dedicated section for each component •  Dedicated documentation •  Dedicated Subversion repository –  http://svn.symfony-project.com/components/ •  Git mirror –  http://github.com/fabpot •  Already published components: –  YAML, Dependency Injection, Event Dispatcher, Templating

Symfony Components •  Existing components –  will soon be released as 1.0 (for PHP 5.2) –  will then be migrated to PHP 5.3 (mainly introducing namespaces) •  New components: –  will work with PHP 5.3 only right from the start

Symfony 2 main goals Flexibility Fast Smart

Symfony 2 core Event Dispatcher Dependency Injection Container Controller Handling

Symfony 2 •  Obviously not yet available as a full-stack MVC framework •  Some components have already been merged into Symfony 1 –  Event Dispatcher –  Form Framework •  Other new components will be released as standalone components: –  Controller Handling –  Output Escaping will be migrated to –  Forms PHP 5.3 soon –  Routing –  Templating Framework (done) –  Dependency Injection Container (done)

symfony 1.X Not fast enough?

symfony 1 is one of the slowest framework when you test it against a simple Hello World application

1644& 1544& !"#$%&!'!& 1344& Hello World 1144& Benchmark 1444& ;44& x 19.5 :44& 944& 844& 744& 644& 544& 344& ()"#*& x 2.3 144& +,& -./0)%.&123& 4& based on numbers from http://paul-m-jones.com/?p=315

Conclusion?

Don’t use symfony for your next « Hello World » website Use PHP ;)

By the way, the fastest implemention of a Hello World application with PHP: die('Hello World');

But symfony 1 is probably fast enough for your next website

… anyway, it is fast enough for Yahoo! Yahoo! Bookmarks sf-to.org/bookmarks Yahoo! Answers sf-to.org/answers delicious.com sf-to.org/delicious

… and recently dailymotion.com announced its migration to Symfony sf-to.org/dailymotion

Second most popular video sharing website One of the top 30 websites in the world 59 million unique users in July 2009

…and of course many other smaller websites…

Symfony 2 Faster?

Symfony 2 core is so light and ﬂexible that its raw performance is outstanding

require_once dirname(__FILE__).'/sf20/autoload2/sfCore2Autoload.class.php'; sfCore2Autoload::register(); Hello World $app = new HelloApplication(); $app->run()->send(); 0 class HelloApplication wit h Symfony 2. { public function __construct() { $this->dispatcher = new sfEventDispatcher(); $this->dispatcher->connect('application.load_controller', array($this, 'loadController')); } public function run() OUTDATED { $request = new sfWebRequest($this->dispatcher); $handler = new sfRequestHandler($this->dispatcher); $response = $handler->handle($request); return $response; } public function loadController(sfEvent $event) { $event->setReturnValue(array(array($this, 'hello'), array($this->dispatcher, $event['request']))); return true; } public function hello($dispatcher, $request) { $response = new sfWebResponse($dispatcher); $response->setContent('Hello World'); return $response; }

require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; use SymfonyComponentsEventDispatcherEvent; Hello World use SymfonyComponentsEventDispatcherEventDispatcher; use SymfonyComponentsRequestHandlerRequestHandler; ymfony 2.0 use SymfonyComponentsRequestHandlerRequest; use SymfonyComponentsRequestHandlerResponse; with S $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register(); on PHP 5.3 $dispatcher = new EventDispatcher(); $dispatcher->connect('core.load_controller', function (Event $event) { $event->setReturnValue(array( function (Request $request) { return new Response('Hello '.$request->getQueryParameter('name')); }, array($event['request']) )); return true; }); $request = new Request(); $request->setQueryParameters(array('name' => 'Fabien')); $handler = new RequestHandler($dispatcher); $response = $handler->handle($request); $response->send();

7922& 7822& !"#$%&!'!& Hello World Benchmark ()$*+& 7022& 7722& 7222& >22& =22& <22& Symfony 2.0 on PHP 5.3 ;22& :22& ,-./+%-&012& x 10 922& x 3 x 7 822& 022& 3+"#4& 722& 56& ,-./+%-&710& 2& based on numbers from http://paul-m-jones.com/?p=315

10 times faster?! You won’t have such a diﬀerence for real applications as most of the time, the limiting factor is not the framework itself

… and PHP 5.3 helps •  The Hello World code on PHP 5.3 is 50% faster than the one on PHP 5.2 (for the same code!) •  All frameworks will beneﬁt from some speed improvements •  Again, real applications won’t have such a speed diﬀerence just by upgrading to PHP 5.3 ! Upgrad e to PHP 5.3 e It mean s performanc improveme nts for FREE

10 times faster?! •  Raw speed matters because – It demonstrates that the core « kernel » is very light – It allows you to use several Symfony frameworks within a single application with the same behavior but diﬀerent optimizations: •  One full-stack framework optimized for ease of use (think symfony 1) •  One light framework optimized for speed (think Rails Metal ;))

How many of you have used PHP 5.3?

This presentation is full of … the new PHP developer best friend

Namespaces from sfRequest to SymfonyCoreRequest use SymfonyCoreRequest; $request = new Request();

Anonymous Functions $a = function ($msg) { echo $msg; } $a('Hello World');

Symfony 2 The Event Dispatcher

EventDispatcher •  Observer Design Pattern •  Based on Cocoa Notiﬁcation Center // sfI18N $callback = array($this, 'listenToChangeCultureEvent'); $dispatcher->connect('user.change_culture', $callback); // sfUser $event = new Event($this, 'user.change_culture', array('culture' => $culture)); $dispatcher->notify($event); •  I18N and User are decoupled •  An event is deﬁned by a unique string •  « Anybody » can listen to any event •  You can notify existing events or create new ones easily

require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; use SymfonyComponentsEventDispatcherEvent; use SymfonyComponentsEventDispatcherEventDispatcher; $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register(); $dispatcher = new EventDispatcher(); $listener = function ($event) { echo sprintf("Hello %s!n", $event['name']); }; $dispatcher->connect('foo', $listener); Can be any PHP callable $event = new Event(null, 'foo', array('name' => 'Fabien')); $dispatcher->notify($event);

Symfony 2 The Request Handler

The Request Handler •  The backbone of Symfony 2 controller implementation •  Class to build web frameworks, not only MVC ones •  Based on a simple assumption: –  The input is a Request object –  The output is a Response object •  The Request object can be anything you want •  The Response object must implement a send() method

The Request Handler use SymfonyComponentsRequestHandlerRequestHandler; use SymfonyComponentsRequestHandlerRequest; $handler = new RequestHandler($dispatcher); $request = new Request(); $response = $handler->handle($request); $response->send();

The Request Handler •  The RequestHandler does several things: –  Notiﬁes events –  Executes a callable (the controller) –  Ensures that the Request is converted to a Response object •  The framework is responsible for choosing the controller •  The controller is responsible for the conversion of the Request to a Response

namespace SymfonyComponentsRequestHandler; use SymfonyComponentsEventDispatcherEvent; use SymfonyComponentsEventDispatcherEventDispatcher; class RequestHandler { protected $dispatcher = null; public function __construct(EventDispatcher $dispatcher) { $this->dispatcher = $dispatcher; } public function handle(RequestInterface $request) { try { return $this->handleRaw($request); } catch (Exception $e) { // exception RequestHandler is $event = $this->dispatcher->notifyUntil(new Event($this, 'core.exception', array('request' => $request, 'exception' => $e))); if ($event->isProcessed()) { return $this->filterResponse($event->getReturnValue(), 'An "core.exception" listener returned a non response object.'); } less than 100 lines throw $e; } } public function handleRaw(RequestInterface $request) { of PHP code! // request $event = $this->dispatcher->notifyUntil(new Event($this, 'core.request', array('request' => $request))); if ($event->isProcessed()) { return $this->filterResponse($event->getReturnValue(), 'An "core.request" listener returned a non response object.'); } // load controller $event = $this->dispatcher->notifyUntil(new Event($this, 'core.load_controller', array('request' => $request))); if (!$event->isProcessed()) { throw new LogicException('Unable to load the controller.'); } list($controller, $arguments) = $event->getReturnValue(); // controller must be a callable if (!is_callable($controller)) { throw new LogicException(sprintf('The controller must be a callable (%s).', var_export($controller, true))); } // controller $event = $this->dispatcher->notifyUntil(new Event($this, 'core.controller', array('request' => $request, 'controller' => &$controller, 'arguments' => &$arguments))); if ($event->isProcessed()) { try { return $this->filterResponse($event->getReturnValue(), 'An "core.controller" listener returned a non response object.'); } catch (Exception $e) { $retval = $event->getReturnValue(); } } else { // call controller $retval = call_user_func_array($controller, $arguments); } // view $event = $this->dispatcher->filter(new Event($this, 'core.view'), $retval); return $this->filterResponse($event->getReturnValue(), sprintf('The controller must return a response (instead of %s).', is_object($event->getReturnValue()) ? 'an object of class '.get_class($event->getReturnValue()) : (string) $event->getReturnValue())); } protected function filterResponse($response, $message) { if (!$response instanceof ResponseInterface) { throw new RuntimeException($message); } $event = $this->dispatcher->filter(new Event($this, 'core.response'), $response); $response = $event->getReturnValue(); if (!$response instanceof ResponseInterface) { throw new RuntimeException('An "core.response" listener returned a non response object.'); } return $response; } public function getEventDispatcher() { return $this->dispatcher; } }

Request Handler Events core.request core.load_controller core.controller core.view core.response core.exception

core.response As the very last event notiﬁed, a listener can modify the Response object just before it is returned to the user

core.response $dispatcher->connect('core.response', function (Event $event, Response $response) { $response->setContent( $response->getContent(). 'The Web Debug Toolbar' ); Content of the response is changed return $response; } );

core.request •  The very ﬁrst event notiﬁed •  It can act as a short-circuit event •  If one listener returns a Response object, it stops the processing

core.request $dispatcher->connect('core.request', function (Event $event) { $event->setReturnValue( new Response('Website unavailable...') ); Don’t go any further! return true; } );

core.load_controller •  The only event for which at least one listener must be connected to •  A listener must return –  A PHP callable (the controller) –  The arguments to pass to the callable

core.load_controller $dispatcher->connect('core.load_controller', function (Event $event) { $event->setReturnValue(array( function () { return new Response('Hello World'); }, array() Whatever the request, )); always return Hello World return true; } );

core.view The controller must return a Response object except if a listener can convert the controller returned value to a Response

core.view $dispatcher->connect('core.load_controller', function (Event $event) { $event->setReturnValue(array( function () { return 'Hello World'; }, array() )); The controller returns a string, not a Response return true; } );

core.view The value returned $dispatcher->connect('core.view', by the controller function (Event $event, $value) { if (is_string($value)) { The view “convert” the return new Response($value); controller returned value to a } Response if it’s a string return $value; } If not, it just returns the ); original value and it lets another view handle it if needed

core.exception The request handler catches all exceptions and give a chance to listeners to return a Response object

core.exception $dispatcher->connect('core.exception', function (Event $event) { $event->setReturnValue( new Response( 'An error occurred: '.$event['exception']->getMessage() ) ); Mask the exception and return a return true; “nice” message to the user } );

Request Handler •  Several listeners can be attached to a single event •  Listeners are called in turn

require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; Hello World use SymfonyComponentsEventDispatcherEvent; use SymfonyComponentsEventDispatcherEventDispatcher; use SymfonyComponentsRequestHandlerRequestHandler; with use SymfonyComponentsRequestHandlerRequest; ts use SymfonyComponentsRequestHandlerResponse; Symfony 2.0 Componen $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register(); $dispatcher = new EventDispatcher(); $dispatcher->connect('core.load_controller', function (Event $event) { $event->setReturnValue(array( function (Request $request) { return new Response('Hello '.$request->getQueryParameter('name')); }, array($event['request']) )); return true; }); $request = new Request(); $request->setQueryParameters(array('name' => 'Fabien')); $handler = new RequestHandler($dispatcher); $response = $handler->handle($request); $response->send();

require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; use SymfonyComponentsEventDispatcherEvent; use SymfonyComponentsEventDispatcherEventDispatcher; use SymfonyComponentsRequestHandlerRequestHandler; use SymfonyComponentsRequestHandlerRequest; use SymfonyComponentsRequestHandlerResponse; $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register();

Autoloading in PHP 5.3 •  Will be hopefully standardized for major/all PHP 5.3 frameworks/libraries •  Main goal: –  provide a better interoperability between PHP frameworks/libraries •  A group of people is discussing this “standard” (nothing decided yet) http://groups.google.com/group/php-standards

Autoloading in PHP 5.3 •  Current proposal http://groups.google.com/group/php-standards/web/php-coding- standard-version-2 •  Used for this presentation examples •  Tested by real-world projects: –  Doctrine 2 –  Lithium –  Symfony 2 Components

$dispatcher = new EventDispatcher(); $dispatcher->connect( 'core.load_controller', $controllerLoader );

$controllerLoader = function (Event $event) { $event->setReturnValue(array( $controller, Can be any PHP callable array($event['request']) ); } Arguments to pass to the controller

Arguments passed to the controller $controller = function (Request $request) { $name = $request->getQueryParameter('name'); return new Response('Hello '.$name); }; A controller should return a Response

$request = new Request(); $request->setQueryParameters(array('name' => 'Fabien')); $handler = new RequestHandler($dispatcher); $response = $handler->handle($request); $response->send(); Sends the response to the browser

Symfony 2 The Templating Framework

New Templating Framework •  4 components –  Template Engine –  Template Renderers –  Template Loaders –  Template Storages •  Independant library

require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; use SymfonyComponentsTemplatingEngine; use SymfonyComponentsTemplatingLoaderFilesystemLoader; $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register(); $loader = new FilesystemLoader( '/path/to/templates/%name%.php' ); $t = new Engine($loader); echo $t->render('index', array('name' => 'Fabien'));

Template Loaders •  No assumption about where and how templates are to be found –  Filesystem –  Database –  Memory, … •  Template names are « logical » names: $loader = new FilesystemLoader('/path/to/templates/%name%.php');

Template Renderers •  No assumption about the format of the templates •  Template names are preﬁxed with the renderer name: –  index == php:index –  user:index $t = new Engine($loader, array( 'user' => new ProjectTemplateRenderer(), 'php' => new PhpRenderer(), ));

Template Embedding Hello <?php echo $name ?> <?php $this->render('embedded', array('name' => $name)) ?> <?php $this->render('smarty:embedded') ?>

Template Inheritance <?php $this->extend('layout') ?> Hello <?php echo $name ?> <html> <head> </head> <body> <?php $this->output('content') ?> </body> </html>

Template Slots <html> <head> <title><?php $this->output('title') ?></title> </head> <body> <?php $this->output('content') ?> </body> </html> <?php $this->set('title', 'Hello World! ') ?> <?php $this->start('title') ?> Hello World! <?php $this->stop() ?>

Template Multiple Inheritance A layout can be decorated by another layout Each layout can override slots

Templating A CMS example

CMS Templating •  Imagine a CMS with the following features: –  The CMS comes bundled with default templates –  The developer can override default templates for a speciﬁc project –  The webmaster can override some templates •  The CMS and developer templates are stored on the ﬁlesystem and are written with pure PHP code •  The webmaster templates are stored in a database and are written in a simple templating language: Hello {{ name }}

CMS Templating •  The CMS has several built-in sections and pages –  Each page is decorated by a layout, depending on the section –  Each section layout is decorated by a base layout cms/templates/ project/templates/ base.php base.php articles/ articles/ layout.php layout.php article.php article.php content.php

articles/content.php <h1>{{ title }}</h1> <p> {{ content }} </p>

articles/article.php <?php $this->extend('articles/layout') ?> <?php $this->set('title', $title) ?> <?php echo $this->render( 'user:articles/content', array('title' => $title, 'content' => $content) ) ?>

articles/layout.php <?php $this->extend ('base') ?> <?php $this->set('title', 'Articles | '.$this->get('title')) ?> <?php $this->start('head') ?> <?php $this->output('head') ?> <link rel="stylesheet" type="text/css" media="all" href="/css/ articles.css" /> <?php $this->stop() ?> <?php $this->output('content') ?>

articles/layout.php <?php $this->extend('base') ?> <?php $this->set('title', 'Articles | '.$this->get('title')) ?> <?php $this->stylesheets->add('/css/articles.css') ?> <?php $this->output('content') ?>

base.php <html> <head> <title> <?php $this->output('title') ?> </title> <?php $this->output('head') ?> </head> <body> <?php $this->output('content') ?> </body> </html>

Template Renderer $t = new Engine($loader, array( 'user' => new ProjectTemplateRenderer(), 'php' => new PhpRenderer(), ));

Template Renderer use SymfonyComponentsTemplatingRendererRenderer; class ProjectTemplateRenderer extends Renderer { public function evaluate(Storage $template, array $parameters = array()) { if ($template instanceof FileStorage) { $template = file_get_contents($template); } $this->parameters = $parameters; return preg_replace_callback('/{{s*(.+?)s*}}/', array($this, 'replaceParameters'), $template); } public function replaceParameters($matches) { return isset($this->parameters[$matches[1]]) ? $this->parameters[$matches[1]] : null; } }

Template Loaders $loader = new FilesystemLoader(array( '/path/to/project/templates/%name%.php', '/path/to/cms/templates/%name%.php', ));

Template Loader Chain $loader = new ChainLoader(array( new ProjectTemplateLoader($pdo), new FilesystemLoader(array( '/path/to/project/templates/%name%.php', '/path/to/cms/templates/%name%.php', )), ));

Database Template Loader $pdo = new PDO('sqlite::memory:'); $pdo->exec('CREATE TABLE tpl (name, tpl)'); $pdo->exec('INSERT INTO tpl (name, tpl) VALUES ("articles/ content", "{{ title }} {{ name }}")');

Database Template Loader use SymfonyComponentsTemplatingLoaderLoader; class ProjectTemplateLoader extends Loader { protected $pdo; public function __construct($pdo) { $this->pdo = $pdo; } public function load($template, $renderer = 'php') { $stmt = $this->pdo->prepare('SELECT tpl FROM tpl WHERE name = :name'); try { $stmt->execute(array('name' => $template)); if (count($rows = $stmt->fetchAll(PDO::FETCH_NUM))) { return $rows[0][0]; } } catch (PDOException $e) { } return false; } }

Template Loader Cache $loader = new CacheLoader($loader, 'path/to/cache');

$pdo = new PDO('sqlite::memory:'); $pdo->exec('CREATE TABLE tpl (name, tpl)'); $pdo->exec('INSERT INTO tpl (name, tpl) VALUES ("articles/content", "{{ title }} {{ name }}")'); $loader = new CacheLoader( new ChainLoader(array( new ProjectTemplateLoader($pdo), new FilesystemLoader(array( '/path/to/project/templates/%name%.php', '/path/to/cms/templates/%name%.php', )), )), 'path/to/cache' ); $t = new Engine($loader, array( 'user' => new ProjectTemplateRenderer() )); $t->render('articles/article', array('title' => 'Title', 'content' => 'Lorem...'));

Symfony 2 Dependency Injection Container

« Dependency Injection is where components are given their dependencies through their constructors, methods, or directly into ﬁelds. » http://www.picocontainer.org/injection.html

The Symfony 2 dependency injection container replaces several symfony 1 concepts into one integrated system: –  sfContext –  sfConﬁguration –  sfConﬁg –  factories.yml –  settings.yml / logging.yml / i18n.yml –  … and some more

DI Hello World example class Message { public function __construct(OutputInterface $output, array $options) { $this->output = $output; $this->options = array_merge(array('with_newline' => false), $options); } public function say($msg) { $this->output->render($msg.($this->options['with_newline'] ? "n" : '')); } }

DI Hello World example interface OutputInterface { public function render($msg); } class Output implements OutputInterface { public function render($msg) { echo $msg; } } class FancyOutput implements OutputInterface { public function render($msg) { echo sprintf("033[33m%s033[0m", $msg); } }

DI Hello World example $output = new FancyOutput(); $message = new Message($output, array('with_newline' => true)); $message->say('Hello World');

A DI container facilitates objects description and object relationships, conﬁgures and instantiates objects

DI Container Hello World example require __DIR__.'/lib/Symfony/Core/ClassLoader.php'; use SymfonyComponentsDependencyInjectionBuilder; use SymfonyComponentsDependencyInjectionReference; $classLoader = new ClassLoader('Symfony', __DIR__.'/lib'); $classLoader->register(); $container = new Builder(); $container->register('output', 'FancyOutput'); $container-> register('message', 'Message')-> setArguments(array(new Reference('output'), array('with_newline' => true))) ; $container->message->say('Hello World!');

$message = $container->message; Get the conﬁguration for the message service The Message constructor must be given an output service Get the output object from the container Create a Message object by passing the constructor arguments

$message = $container->message; is roughly equivalent to $output = new FancyOutput(); $message = new Message($output, array('with_newline' => true));!

$container = new Builder(); $container->register('output', 'FancyOutput'); $container-> register('message', 'Message')-> setArguments(array(new Reference('output'), array('with_newline' => true))) ; $container->message->say('Hello World!'); PHP <container xmlns="http://symfony-project.org/2.0/container"> <services> <service id="output" class="FancyOutput" /> XML <service id="message" class="Message"> XML is validated <argument type="service" id="output" /> <argument type="collection"> against an XSD <argument key="with_newline">true</argument> </argument> </service> </services> </container> $container = new Builder(); $loader = new XmlFileLoader($container); $loader->load('services.xml');

$container = new Builder(); $container->register('output', 'FancyOutput'); $container-> register('message', 'Message')-> setArguments(array(new sfServiceReference('output'), array('with_newline' => true))) ; $container->message->say('Hello World!'); PHP services: output: { class: FancyOutput } message: YAML class: Message arguments: - @output - { with_newline: true } $container = new Builder(); $loader = new YamlFileLoader($container); $loader->load('services.yml');

<container xmlns="http://symfony-project.org/2.0/container"> <parameters> <parameter key="output.class">FancyOutput</parameter> <parameter key="message.options" type="collection"> <parameter key="with_newline">true</parameter> </parameter> </parameters> <services> <service id="output" class="%output.class%" /> <service id="message" class="Message"> <argument type="service" id="output" /> <argument>%message.options%</argument> </service> </services> </container> $container = new rBuilder(); $loader = new XmlFileLoader($container); $loader->load('services.xml');

<container xmlns="http://symfony-project.org/2.0/container"> <imports> <import resource="config.xml" /> </imports> <services> <service id="output" class="%output.class%" /> <service id="message" class="Message"> <argument type="service" id="output" /> <argument>%message.options%</argument> </service> </services> </container> <container xmlns="http://symfony-project.org/2.0/container"> <parameters> <parameter key="output.class">FancyOutput</parameter> <parameter key="message.options" type="collection"> <parameter key="with_newline">true</parameter> </parameter> </parameters> </container> $container = new Builder(); $loader = new FileXmlFileLoader($container); $loader->load('services.xml');

<services> <import resource="config.yml" class="SymfonyComponentsDependencyInjectionLoader YamlFileLoader" /> <service id="output" class="%output.class%" /> <service id="message" class="Message"> <argument type="service" id="output" /> <argument>%message.options%</argument> </service> </services> parameters: output.class: FancyOutput message.options: { with_newline: true } $container = new Builder(); $loader = new XmlFileLoader($container); $loader->load('services.xml');

$pdo = new PDO('sqlite::memory:'); $pdo->exec('CREATE TABLE tpl (name, tpl)'); $pdo->exec('INSERT INTO tpl (name, tpl) VALUES ("articles/content", "{{ title }} {{ name }}")'); $loader = new CacheLoader( new ChainLoader(array( new ProjectTemplateLoader($pdo), new FilesystemLoader(array( '/path/to/project/templates/%name%.php', '/path/to/cms/templates/%name%.php', )), )), 'path/to/cache' ); $t = new Engine($loader, array( 'user' => new ProjectTemplateRenderer() )); $t->render('articles/article', array('title' => 'Title', 'content' => 'Lorem...'));

$pdo = new PDO('sqlite::memory:'); <service id="pdo" class="PDO"> <argument>sqlite::memory:</argument> </service>

$container = new Builder(); $loader = new FileXmlLoader($container); $loader->load('cms.xml'); $pdo->exec('CREATE TABLE tpl (name, tpl)'); $pdo->exec('INSERT INTO tpl (name, tpl) VALUES ("articles/content", "{{ title }} {{ name }}")'); echo $container->template->render('articles/article', array('title' => 'Title', 'content' => 'Lorem...'));

<container xmlns="http://symfony-project.org/2.0/container"> <imports> <import resource="config.yml" class="SymfonyComponentsDependencyInjectionLoader YamlFileLoader" /> <import resource="template_loader.xml" /> </imports> <services> <service id="pdo" class="PDO"> <argument>sqlite::memory:</argument> </service> <service id="template_renderer" class="ProjectTemplateRenderer" /> <service id="template" class="SymfonyComponentsTemplatingEngine"> <argument type="service" id="template_loader" /> <argument type="collection"> <argument type="service" key="user" id="template_renderer" /> </argument> </service> </services> </container>

<services> <service id="template_loader_project" class="ProjectTemplateLoader"> <argument type="service" key="pdo" id="pdo" /> </service> <service id="template_loader_filesystem" class="SymfonyComponentsTemplatingLoader FilesystemLoader"> <argument>%template.filesystem_pattern%</argument> </service> <service id="template_loader_chain" class="SymfonyComponentsTemplatingLoaderChainLoader"> <argument type="collection"> <argument type="service" id="template_loader_project" /> <argument type="service" id="template_loader_filesystem" /> </argument> </service> <service id="template_loader" class="SymfonyComponentsTemplatingLoaderCacheLoader"> <argument type="service" id="template_loader_chain" /> <argument>%application.dir%/cache</argument> </service> </services>

<services> <service id="template_loader" class="SymfonyComponentsTemplatingLoaderCacheLoader"> <argument type="service"> <service class="SymfonyComponentsTemplatingLoaderChainLoader"> <argument type="collection"> <argument type="service"> <service class="ProjectTemplateLoader"> <argument type="service" key="pdo" id="pdo" /> </service> </argument> <argument type="service"> <service class="SymfonyComponentsTemplatingLoaderFilesystemLoader"> <argument>%template.filesystem_patterns%</argument> </service> </argument> </argument> </service> </argument> <argument>%application.dir%/cache</argument> </service> </services>

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Symfony 2.0 on PHP 5.3

by Fabien Potencier on Oct 31, 2009

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