1. Symfony2
Fabien Potencier

2. How many of you have already used symfony1?

3. How many of you have already played with Symfony2?

4. What is Symfony2?

5. A set of decoupled
and cohesive components

6. DependencyInjection
EventDispatcher
HttpFoundation
OutputEscaper
DomCrawler
CssSelector
Templating
HttpKernel
BrowserKit
Validator
Routing
Console
Process
Finder
Form
Yaml

7. git clone git://github.com/symfony/symfony.git

8. A set of decoupled
and cohesive components
Autoloading

9. PEAR_Log > PEAR/Log.php
Zend_Log > Zend/Log.php
Swift_Mime_Message > Swift/Mime/Message.php
Twig_Node_For > Twig/Node/For.php

10. SymfonyFoundationKernel
Symfony/Foundation/Kernel.php
DoctrineDBALDriver
Doctrine/DBAL/Driver.php
pdependreflectionReflectionSession
pdepend/reflection/ReflectionSession.php
http://groups.google.com/group/php-standards/web/psr-0-final-proposal

11. require_once '.../Symfony/Framework/
UniversalClassLoader.php';
use SymfonyFrameworkUniversalClassLoader;
$loader = new UniversalClassLoader();
$loader->register();

12. $loader->registerNamespaces(array(
'Symfony' => '/path/to/symfony/src',
'Doctrine' => '/path/to/doctrine/lib',
'pdepend' => '/path/to/reflection/source',
));
PHP 5.3 technical
interoperability standards

13. $loader->registerPrefixes(array(
'Swift_' => '/path/to/swiftmailer/lib/classes',
'Zend_' => '/path/to/vendor/zend/library',
));
PEAR style

14. A set of decoupled
and cohesive components
Process

15. use SymfonyComponentProcessProcess;
$cmd = 'ssh 1.2.3.4 "ps waux"';
$process = new Process($cmd);
$process->run();
if (!$process->isSuccessful()) {
throw new RuntimeException(
$process->getErrorOutput());
}
echo $process->getOutput();

16. $cmd = 'ssh 1.2.3.4 "tail -f /some/log"';
$process = new Process($cmd);
$process->run(function ($type, $buffer) {
echo $buffer;
});

17. use SymfonyComponentProcessPhpProcess;
$process = new PhpProcess(
'<?php echo "hello"; ?>');
$process->run();
if (!$process->isSuccessful()) {
throw new RuntimeException(
$process->getErrorOutput());
}
echo $process->getOutput();

18. A set of decoupled
and cohesive components
CssSelector

19. use SymfonyComponentCssSelectorParser;
Parser::cssToXpath('h4 > a:contains("foo")');

20. use SymfonyComponentCssSelectorParser;
$document = new DOMDocument();
$document->loadHTMLFile('...');
$xpath = new DOMXPath($document);
$expr = Parser::cssToXpath('a.smart');
$nodes = $xpath->query($expr);
foreach ($nodes as $node)
{
printf("%s (%s)n", $node->nodeValue, $node-
>getAttribute('href'));
}

21. A set of decoupled
and cohesive components
Finder

22. use SymfonyComponentFinderFinder;
$finder = new Finder();
$finder
->files()
->in(__DIR__)
->...()
->sortByName()
;

23. $finder
->name('*.php')
->depth('<= 1')
->date('>= yesterday')
->size('<= 1K')
->filter(function (SplFileInfo $file) {
return strlen($file->getBasename()) < 9;
})
;

24. foreach ($finder as $file) {
print $file->getRealpath()."n";
}
$files = iterator_to_array($finder);
$count = iterator_count($finder);

25. use SymfonyComponentFinderFinder;
$s3 = new Zend_Service_Amazon_S3($key, $sct);
$s3->registerStreamWrapper("s3");
$finder = new Finder();
$finder
->name('photos*')
->size('< 100K')
->date('since 1 hour ago')
->in('s3://bucket-name')
;

26. A set of decoupled
and cohesive components
Routing

27. /blog.php?section=symfony&article_id=18475

28. web/
index.php

29. /index.php/blog/2010/09/18/Symfony2-in-India

30. /blog/2010/09/18/Symfony2-in-India

31. /blog/:year/:month/:day/:slug

32. post:
pattern: /blog/:year/:month/:day/:slug
defaults:
{ _controller: BlogBundle:Post:show }

33. <routes>
<route
id="post"
pattern="/blog/:year/:month/:day/:slug">
<default key="_controller">
BlogBundle:Post:show
</default>
</route>
</routes>

34. use SymfonyComponentRoutingRouteCollection;
use SymfonyComponentRoutingRoute;
$collection = new RouteCollection();
$route = new Route(
'/blog/:year/:month/:day/:slug',
array('_controller' => 'BlogBundle:Post:show'));
$collection->addRoute('post', $route);
return $collection;

35. $router
->match('/blog/2010/09/18/Symfony2-in-India')
$router
->generate('post', array('slug' => '...'))

36. post:
pattern: /post/:slug
defaults:
{ _controller: BlogBundle:Post:show }

37. $router
->generate('post', array('slug' => '...'))

38. An Object-Oriented abstraction
on top of PHP

39. An Object-Oriented abstraction
on top of PHP
Request

40. use SymfonyComponentHttpFoundationRequest;
$request = new Request();
// get a $_GET parameter
$request->query->get('page');
// get a $_POST parameter
$request->request->get('page');
// get a $_COOKIE parameter
$request->cookies->get('name');
$request->getPreferredLanguage(array('en', 'fr'));
$request->isXmlHttpRequest();

41. // get a $_FILE parameter
$f = $request->files->get('image');
// $f is an instance of
// SymfonyComponentHttpFoundationFileUploadedFile
// guess extension, based on the mime type
$n = '/path/to/file'.$file->getDefaultExtension();
$f->move($n);

42. new Request();
new Request(
$_GET, $_POST, array(),
$_COOKIE, $_FILES, $_SERVER
);
Request::create('/hello/Fabien', 'GET');

43. An Object-Oriented abstraction
on top of PHP
Session

44. $session = $request->getSession();
$session->set('foo', 'bar');
$session->get('foo');
$session->setFlash('notice', 'Congratulations!');

45. An Object-Oriented abstraction
on top of PHP
Response

46. use SymfonyComponentHttpFoundationResponse;
$response = new Response('Hello World', 200,
array('Content-Type' => 'text/plain'));
$response->send();
$response->setHeader('Content-Type', 'text/
plain');
$response->setCookie('foo', 'bar');
$response->setContent('Hello World');
$response->setStatusCode(200);

47. An Object-Oriented abstraction
of the HTTP dialog

48. A MVC Web Framework

49. The Symfony2 MVC Philosophy

50. Be as easy as possible for newcomers
and as flexible as possible for advanced users

51. MVC

52. http://symfony-reloaded.org/
http://symfony-reloaded.org/downloads/
sandbox_2_0_PR3.zip

53. post:
pattern: /hello/:name
defaults:
{ _controller: HelloBundle:Hello:index }
namespace ApplicationHelloBundleController;
use SymfonyBundleFrameworkBundleController;
class HelloController extends Controller
{
public function indexAction($name)
{
return new Response('Hello '.$name);
}
}

54. namespace ApplicationHelloBundleController;
use SymfonyBundleFrameworkBundleController;
class HelloController extends Controller
{
public function indexAction($name)
{
// Get things from the Model
return $this->render(
'HelloBundle:Hello:index',
array('name' => $name)
);
}
}

55. Hello <?php echo $name ?>!

56. <?php $view->extend('HelloBundle::layout') ?>
Hello <?php echo $name ?>!

57. <html>
<head>
<title>
<?php $view['slots']->output('title') ?>
</title>
</head>
<body>
<?php $view['slots']->output('_content') ?>
</body>
</html>

58. slot
title
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59. {% extends "HelloBundle::layout" %}
{% block content %}
Hello {{ name }}!
{% endblock %}

60. <html>
<head>
<title>
{% block title %}{% endblock %}
</title>
</head>
<body>
{% block body %}{% endblock %}
</body>
</html>

61. ~ PAC / HMVC
http://en.wikipedia.org/wiki/Presentation-abstraction-control

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63. public function indexAction($name)
{
$embedded = $this['controller_resolver']
->render('HelloBundle:Hello:foo',
array('name' => $name));
return $this->render(
'HelloBundle:Hello:index',
array(
'name' => $name,
'embedded' => $embedded,
)
);
}

64. <?php $view->extend('...:layout') ?>
Lorem ipsum...
<?php echo $view['actions']
->render('HelloBundle:Hello:foo',
array('name' => $name)) ?>
Lorem ipsum...

65. Bundles

66. .../
SomeBundle/
Controller/
Entity/
Resources/
config/
views/
SomeBundle.php
Tests/

67. public function registerBundleDirs()
{
return array(
'Application' => __DIR__.'/../src/Application',
'Bundle' => __DIR__.'/../src/Bundle',
'SymfonyBundle' => __DIR__.'/../src/vendor/
symfony/src/Symfony/Bundle',
);
}

68. $this->render('SomeBundle:Hello:index', $params)

69. hello:
pattern: /hello/:name
defaults:
{ _controller: SomeBundle:Hello:index }

70. SomeBundle can be any of
ApplicationSomeBundle
BundleSomeBundle
SymfonyBundleSomeBundle

71. Environments

72. Developers Customer End Users
Development Staging Production
Environment Environment Environment

73. cache cache cache
debug
debug
debug
logs
logs
logs
stats stats stats
Development Staging Production
Environment Environment Environment

74. # config/config.yml
doctrine.dbal:
dbname: mydbname
user: root
password: %doctrine.dbal_password%
swift.mailer:
transport: smtp
host: localhost

75. # config/config_dev.yml
imports:
- { resource: config.yml }
doctrine.dbal:
password: null
swift.mailer:
transport: gmail
username: xxxxxxxx
password: xxxxxxxx

76. # Doctrine Configuration
doctrine.dbal:
dbname: xxxxxxxx
user: xxxxxxxx
password: ~
# Swiftmailer Configuration
swift.mailer:
transport: smtp
encryption: ssl
auth_mode: login
host: smtp.gmail.com
username: xxxxxxxx
password: xxxxxxxx

77. <!-- Doctrine Configuration -->
<doctrine:dbal dbname="xxxxxxxx" user="xxxxxxxx"
password="" />
<!-- Swiftmailer Configuration -->
<swift:mailer
transport="smtp"
encryption="ssl"
auth_mode="login"
host="smtp.gmail.com"
username="xxxxxxxx"
password="xxxxxxxx" />

78. // Doctrine Configuration
$container->loadFromExtension('doctrine', 'dbal', array(
'dbname' => 'xxxxxxxx',
'user' => 'xxxxxxxx',
'password' => '',
));
// Swiftmailer Configuration
$container->loadFromExtension('swift', 'mailer', array(
'transport' => "smtp",
'encryption' => "ssl",
'auth_mode' => "login",
'host' => "smtp.gmail.com",
'username' => "xxxxxxxx",
'password' => "xxxxxxxx",
));

79. Dependency Injection Container

80. Third-party libraries integration
Unified Configuration

81. # Twig Configuration
twig.config:
auto_reload: true
# Zend Logger Configuration
zend.logger:
priority: debug
path: %kernel.root_dir%/logs/
%kernel.environment%.log

82. Configuration formats
XML, YAML, PHP, INI, or Annotations
Parameters management
Fast (cached)
Inheritance
Sensitive data security
…

83. <doctrine:dbal
dbname="sfweb"
username="root"
password="SuperSecretPasswordThatAnyoneCanSee"
/>

84. in a .htaccess or httpd.conf file
SetEnv SYMFONY__DOCTRINE__DBAL__PASSWORD "foobar"
%doctrine.dbal.password%

85. <doctrine:dbal
dbname="sfweb"
username="root"
password="%doctrine.dbal.password%"
/>

86. Developer Tools

87. INFO: Matched route "blog_home" (parameters: array ( '_bundle' =>
'BlogBundle', '_controller' => 'Post', '_action' => 'index', '_route' =>
'blog_home',))
INFO: Using controller "BundleBlogBundleController
PostController::indexAction"
INFO: SELECT s0_.id AS id0, s0_.title AS title1, s0_.html_body AS html_body2,
s0_.excerpt AS excerpt3, s0_.published_at AS published_at4 FROM sf_weblog_post
s0_ ORDER BY s0_.published_at DESC LIMIT 10 (array ())

88. INFO: Matched route "blog_post" (parameters: array ( '_bundle' =>
'BlogBundle', '_controller' => 'Post', '_action' => 'show', '_format' =>
'html', 'id' => '3456', '_route' => 'blog_post',))
INFO: Using controller "BundleBlogBundleController
PostController::showAction »
INFO: SELECT s0_.id AS id0, s0_.title AS title1, s0_.html_body AS html_body2,
s0_.excerpt AS excerpt3, s0_.published_at AS published_at4 FROM sf_weblog_post
s0_ WHERE s0_.id = ? (array ( 0 => '3456',))
ERR: Post "3456" not found! (No result was found for query although at least
one row was expected.) (uncaught SymfonyComponentsRequestHandlerException
NotFoundHttpException exception)
INFO: Using controller "SymfonyFrameworkWebBundleController
ExceptionController::exceptionAction"

89. DEBUG: Notifying (until) event "core.request" to listener "(SymfonyFrameworkWebBundleListenerRequestParser, resolve)"
INFO: Matched route "blog_post" (parameters: array ( '_bundle' => 'BlogBundle', '_controller' => 'Post', '_action' => 'show',
'_format' => 'html', 'id' => '3456', '_route' => 'blog_post',))
DEBUG: Notifying (until) event "core.load_controller" to listener "(SymfonyFrameworkWebBundleListenerControllerLoader,
resolve)"
INFO: Using controller "BundleBlogBundleControllerPostController::showAction"
DEBUG: Listener "(SymfonyFrameworkWebBundleListenerControllerLoader, resolve)" processed the event "core.load_controller"
INFO: Trying to get post "3456" from database
INFO: SELECT s0_.id AS id0, s0_.title AS title1, s0_.html_body AS html_body2, s0_.excerpt AS excerpt3, s0_.published_at AS
published_at4 FROM sf_weblog_post s0_ WHERE s0_.id = ? (array ( 0 => '3456',))
DEBUG: Notifying (until) event "core.exception" to listener "(SymfonyFrameworkWebBundleListenerExceptionHandler, handle)"
ERR: Post "3456" not found! (No result was found for query although at least one row was expected.) (uncaught SymfonyComponents
RequestHandlerExceptionNotFoundHttpException exception)
DEBUG: Notifying (until) event "core.request" to listener "(SymfonyFrameworkWebBundleListenerRequestParser, resolve)"
DEBUG: Notifying (until) event "core.load_controller" to listener "(SymfonyFrameworkWebBundleListenerControllerLoader,
resolve)"
INFO: Using controller "SymfonyFrameworkWebBundleControllerExceptionController::exceptionAction"
DEBUG: Listener "(SymfonyFrameworkWebBundleListenerControllerLoader, resolve)" processed the event "core.load_controller"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleListenerResponseFilter, filter)"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleDebugDataCollector
DataCollectorManager, handle)"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleDebugWebDebugToolbar, handle)"
DEBUG: Listener "(SymfonyFrameworkWebBundleListenerExceptionHandler, handle)" processed the event "core.exception"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleListenerResponseFilter, filter)"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleDebugDataCollector
DataCollectorManager, handle)"
DEBUG: Notifying (filter) event "core.response" to listener "(SymfonyFrameworkWebBundleDebugWebDebugToolbar, handle)"

98. Security
XSS / CSRF / SQL Injection

99. Functional Tests

100. $client = $this->createClient();
$crawler = $client->request(
'GET', '/hello/Fabien');
$this->assertTrue($crawler->filter(
'html:contains("Hello Fabien")')->count());

101. $this->assertEquals(
10,
$crawler->filter('div.hentry')->count());
$this->assertTrue(
$client->getResponse()->isSuccessful());

102. $crawler = $client->request(
'GET', 'hello/Lucas'
);

103. $link = $crawler->selectLink("Greet Lucas");
$client->click($link);

104. $form = $crawler->selectButton('submit');
$client->submit($form, array(
'name' => 'Lucas',
'country' => 'France',
'like_symfony' => true,
'photo' => '/path/to/lucas.jpg',
));

105. $harry = $this->createClient();
$sally = $this->createClient();
$harry->request('POST', '/say/sally/Hello');
$sally->request('GET', '/messages');
$this->assertEquals(201,
$harry->getResponse()->getStatusCode());
$this->assertRegExp('/Hello/',
$sally->getResponse()->getContent());

106. $harry = $this->createClient();
$sally = $this->createClient();
$harry->insulate();
$sally->insulate();
$harry->request('POST', '/say/sally/Hello');
$sally->request('GET', '/messages');
$this->assertEquals(201,
$harry->getResponse()->getStatusCode());
$this->assertRegExp('/Hello/',
$sally->getResponse()->getContent());

107. Caching

108. HTTP Expiration / HTTP Validation

109. $response->setSharedMaxAge(...);
$response->setTtl(...);
$response->setMaxAge(...);
$response->setClientTtl(...);
$response->setExpires(...);
$response->setETag(...);
$response->setLastModified(...);

110. Cache-Control: s-maxage=10

111. public function showAction()
{
// ...
$response = $this->render('...', $vars);
$response->setSharedMaxAge(10);
return $response;
}

112. Symfony 2 comes built-in with an HTTP accelerator

113. cacheable for 10 seconds
cacheable for 5 seconds
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114. cacheable for 10 seconds
<?php $view->extend('...:layout') ?>
<?php $view['slots']->start('sidebar') ?> 5 seconds
cacheable for
<?php echo $view['actions']->render('...:foo') ?>
<?php $view['slots']->stop() ?>

115. $view['actions']->render('HelloBundle:Hello:foo',
array('name' => $name),
array('standalone' => true)
)

116. Lorem
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vehicula
ves;bulum
dictum.
enim
por6tor
iaculis.
Aenean
non
velit
tortor.
Nullam
adipiscing
Nulla
facilisi.
Lorem
ipsum
malesuada
aliquam.
Mauris
dignissim,
urna
dolor
sit
amet,
quis
iaculis
tempus,
justo
libero
por6tor
consectetur
adipiscing
elit.
est,
nec
eleifend
est
elit
vitae
ante.
Mauris
vehicula
Curabitur
interdum
luctus
metus,
in
ves;bulum
dictum.
pulvinar
lectus
rutrum
sit
amet.
Duis
Aenean
non
velit
tortor.
gravida,
metus
in
dictum
eleifend,
dolor
Nullam
adipiscing
risus
;ncidunt
ligula,
non
volutpat
nulla
malesuada
aliquam.
sapien
in
elit.
Nulla
rutrum
erat
id
neque
Mauris
dignissim,
urna
suscipit
eu
ultricies
odio
sollicitudin.
quis
iaculis
tempus,
justo
Aliquam
a
mi
vel
eros
placerat
hendrerit.
libero
por6tor
est,
nec
Phasellus
por6tor,
augue
sit
amet
eleifend
est
elit
vitae
ante.
vulputate
venena;s,
dui
leo
commodo
Curabitur
interdum
luctus
odio,
a
euismod
turpis
ligula
in
elit.
metus.

117. <esi:include src="..." />
Lorem
ipsum
dolor
sit
amet,
consectetur
adipiscing
elit.
In
vel
nulla
arcu,
vitae
cursus
nunc.
Integer
semper
turpis
et
enim
por6tor
iaculis.
Nulla
facilisi.
Lorem
ipsum
dolor
sit
amet,
consectetur
adipiscing
elit.
Mauris
vehicula
ves;bulum
dictum.
Aenean
non
velit
tortor.
Nullam
adipiscing
malesuada
aliquam.
Mauris
dignissim,
urna
quis
iaculis
tempus,
justo
libero
por6tor
est,
nec
eleifend
est
elit
vitae
ante.
Curabitur
interdum
luctus
metus,
in
pulvinar
lectus
rutrum
sit
amet.
Duis
gravida,
metus
in
dictum
eleifend,
dolor
risus
;ncidunt
ligula,
non
volutpat
nulla
sapien
in
elit.
Nulla
rutrum
erat
id
neque
suscipit
eu
ultricies
odio
sollicitudin.
Aliquam
a
mi
vel
eros
placerat
hendrerit.
Phasellus
por6tor,
augue
sit
amet
vulputate
venena;s,
dui
leo
commodo
odio,
a
euismod
turpis
ligula
in
elit.

118. ESI… or Edge Side Includes

119. Lorem
ipsum
dolor
sit
amet,
1
2
Symfony2 Application
Lorem
ipsum
Reverse Proxy
dolor
Client
3
Lorem
ipsum
Lorem
dolor
sit
ipsum
amet,
dolor
4

120. Web Server
Symfony2
app
Requests
Response

121. Web Server
Symfony2 HTTP proxy
Symfony2
app
Requests
Response

122. Reverse proxy
Web Server
Symfony2
app
Requests
Response

123. Extensibility

124. Request
core.request
getController()
core.controller
getArguments()
core.view
core.response
Response

125. Request
core.request
getController()
core.controller
core.exception
getArguments()
core.view
core.response
Response

126. SwiftmailerBundle DoctrineBundle
ZendBundle ...
FrameworkBundle TwigBundle
Bundles
Components
HttpKernel DependencyInjection Console
Routing Templating
HttpFoundation Event Dispatcher ...

127. Questions?