Php Barcelona 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 –  Forms –  Routing –  Templating Framework (done) –  Dependency Injection Container (done)

will be

migrated to

PHP 5.3 soon

symfony 1.X Not fast enough?

symfony 1 is one of the slowest framework

when you test it against a simple Hello World application

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+,& -./0)%.&123&

4&

144&

344&

544&

644&

744&

844&

944&

:44&

;44&

1444&

1144&

1344&

1544&

1644&

x 19.5

based on numbers from http://paul-m-jones.com/?p=315

x 2.3

Hello World

Benchmark

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();

$app = new HelloApplication(); $app->run()->send();

class HelloApplication { public function __construct() { $this->dispatcher = new sfEventDispatcher(); $this->dispatcher->connect('application.load_controller', array($this, 'loadController')); }

public function run() { $request = new sfWebRequest($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; } }

Hello World

with Symfony 2.0

OUTDATED

require __DIR__.'/lib/Symfony/Core/ClassLoader.php';

use Symfony\Components\EventDispatcher\Event; use Symfony\Components\EventDispatcher\EventDispatcher; use Symfony\Components\RequestHandler\RequestHandler; use Symfony\Components\RequestHandler\Request; use Symfony\Components\RequestHandler\Response;

$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();

Hello World

with Symfony 2.0

on PHP 5.3

!"#$%&!'!&()$*+&

,-./+%-&012&

3+"#4&

56& ,-./+%-&710&

2&

722&

022&

822&

922&

:22&

;22&

<22&

=22&

>22&

7222&

7722&

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x 3 x 7

based on numbers from http://paul-m-jones.com/?p=315

Hello World

Benchmark

Symfony 2.0 on PHP 5.3

x 10

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

Upgrade to PHP 5.3!

It means performance

improvements 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 Symfony\Core\Request

use Symfony\Core\Request;

$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

•  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

// 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);


use Symfony\Components\EventDispatcher\Event; use Symfony\Components\EventDispatcher\EventDispatcher;


$dispatcher = new EventDispatcher();

$listener = function ($event) { echo sprintf("Hello %s!\n", $event['name']); }; $dispatcher->connect('foo', $listener);

$event = new Event(null, 'foo', array('name' => 'Fabien')); $dispatcher->notify($event);

Can be any PHP callable

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 Symfony\Components\RequestHandler\RequestHandler; use Symfony\Components\RequestHandler\Request;

$handler = new RequestHandler($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 Symfony\Components\RequestHandler;

use Symfony\Components\EventDispatcher\Event; use Symfony\Components\EventDispatcher\EventDispatcher;

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 $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.'); }

throw $e; } }

public function handleRaw(RequestInterface $request) { // 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; } }

RequestHandler is

less than 100 lines

of PHP code!

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' );

return $response; } );

Content of the response is changed

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...') );

return true; } );

Don’t go any further!


•  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


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

return true; } );

Whatever the request, always return Hello World

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() ));

return true; } );

The controller returns a string, not a Response

core.view

$dispatcher->connect('core.view', function (Event $event, $value) { if (is_string($value)) { return new Response($value); }

return $value; } );

The view “convert” the controller returned value to a Response if it’s a string

If not, it just returns the original value and it lets another view handle it if needed

The value returned by the controller

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() ) );

return true; } );

Mask the exception and return a “nice” message to the user

Request Handler

•  Several listeners can be attached to a single event

•  Listeners are called in turn




$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; });



Hello World

with

Symfony 2.0 Components




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( $controller, array($event['request']) ); }

Can be any PHP callable

Arguments to pass to the controller

$controller = function (Request $request) { $name = $request->getQueryParameter('name');

return new Response('Hello '.$name); };

Arguments passed to the controller

A controller should return a Response



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


use Symfony\Components\Templating\Engine; use Symfony\Components\Templating\Loader\FilesystemLoader;


$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/ base.php articles/ layout.php article.php

project/templates/ base.php articles/ layout.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 Symfony\Components\Templating\Renderer\Renderer;

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 Symfony\Components\Templating\Loader\Loader;

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');


$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" : '')); } }


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%s\033[0m", $msg); } }


$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


use Symfony\Components\DependencyInjection\Builder; use Symfony\Components\DependencyInjection\Reference;


$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!');

DI Container Hello World example

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;

$message = $container->message;

is roughly equivalent to

$output = new FancyOutput(); $message = new Message($output, array('with_newline' => true));!


$container->register('output', 'FancyOutput'); $container-> register('message', 'Message')-> setArguments(array(new Reference('output'), array('with_newline' => true))) ;


<container xmlns="http://symfony-project.org/2.0/container"> <services> <service id="output" class="FancyOutput" />

<service id="message" class="Message"> <argument type="service" id="output" /> <argument type="collection"> <argument key="with_newline">true</argument> </argument> </service> </services> </container>

$container = new Builder(); $loader = new XmlFileLoader($container); $loader->load('services.xml');

PHP

XML XML is validated against an XSD


$container->register('output', 'FancyOutput'); $container-> register('message', 'Message')-> setArguments(array(new sfServiceReference('output'), array('with_newline' => true))) ;


services: output: { class: FancyOutput } message: class: Message arguments: - @output - { with_newline: true }

$container = new Builder(); $loader = new YamlFileLoader($container); $loader->load('services.yml');

PHP

YAML

<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="Symfony\Components\DependencyInjection\Loader\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');


$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="Symfony\Components\DependencyInjection\Loader\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="Symfony\Components\Templating\Engine"> <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="Symfony\Components\Templating\Loader\FilesystemLoader"> <argument>%template.filesystem_pattern%</argument> </service>

<service id="template_loader_chain" class="Symfony\Components\Templating\Loader\ChainLoader"> <argument type="collection"> <argument type="service" id="template_loader_project" /> <argument type="service" id="template_loader_filesystem" /> </argument> </service>

<service id="template_loader" class="Symfony\Components\Templating\Loader\CacheLoader"> <argument type="service" id="template_loader_chain" /> <argument>%application.dir%/cache</argument> </service>

</services>

<services> <service id="template_loader" class="Symfony\Components\Templating\Loader\CacheLoader"> <argument type="service"> <service class="Symfony\Components\Templating\Loader\ChainLoader"> <argument type="collection"> <argument type="service"> <service class="ProjectTemplateLoader"> <argument type="service" key="pdo" id="pdo" /> </service> </argument> <argument type="service"> <service class="Symfony\Components\Templating\Loader\FilesystemLoader"> <argument>%template.filesystem_patterns%</argument> </service> </argument> </argument> </service> </argument> <argument>%application.dir%/cache</argument> </service> </services>

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Documents

Php Barcelona Symfony 2 0 on PHP 5 3