Symfony – In Plain English

For every newcomer, Symfony appears to be an invincible beast at first glance. But taking a look from the distance reveals some patterns that are quite easy to grasp. We'll take a look at Symfony's concepts and philosophy, its components, the full-stack framework and the ecosystem. In a nutshell, this talk teaches you on a beginner's level what all the Symfony fuss is about and why it became *the* top-notch PHP project it is nowadays.

http://dcmuc16.drupalcamp.de/sessions/symfony-plain-english

Transcript

1. @bicpi
   Symfony – In Plain English Philipp Rieber
   #DCMuc16
   

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2. #DCMuc16
   

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3. #DCMuc16
   

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4. @bicpi
   PHP・Symfony・DevOps・Technical Writer
   https://philipp-rieber.net
   #DCMuc16
   

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5. @bicpi
   PHP・Symfony・DevOps・Technical Writer
   https://philipp-rieber.net
   #DCMuc16
   

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6. ottonova.de
   We are creating a better private health insurance company for you.
   #DCMuc16
   

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7. @sfugmuc
   Symfony User Group Munich
   #DCMuc16
   

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8. First, Symfony2 is a reusable set of standalone, decoupled, and
   cohesive PHP components that solve common web development
   problems.
   – Fabien Potencier
   ‘
   http://fabien.potencier.org/what-is-symfony2.html
   What is Symfony?
   #DCMuc16
   

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9. BrowserKit
   ClassLoader
   Config
   Asset
   Console
   CssSelector
   Debug
   DependencyInjection
   DomCrawler
   EventDispatcher
   ExpressionLanguage
   Filesystem
   Finder
   Form
   Guard
   HttpFoundation
   HttpKernel
   Icu
   Intl
   Ldap
   Locale
   OptionsResolver
   Process
   PropertyAccess
   PropertyInfo
   Routing
   Security
   Serializer
   Stopwatch
   Templating
   Translation
   Validator
   VarDumper
   Yaml
   Guard
   Workflow
   #DCMuc16
   

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10. BrowserKit
    ClassLoader
    Config
    Asset
    Console
    CssSelector
    Debug
    DependencyInjection
    DomCrawler
    EventDispatcher
    ExpressionLanguage
    Filesystem
    Finder
    Form
    Guard
    HttpFoundation
    HttpKernel
    Icu
    Intl
    Ldap
    Locale
    OptionsResolver
    Process
    PropertyAccess
    PropertyInfo
    Routing
    Security
    Serializer
    Stopwatch
    Templating
    Translation
    Validator
    VarDumper
    Yaml
    Guard
    Workflow
    #DCMuc16
    

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11. $ composer require symfony/yaml
    Yaml Component #DCMuc16
    

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12. $ composer require symfony/yaml
    require 'vendor/autoload.php';
    Yaml Component #DCMuc16
    

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13. $ composer require symfony/yaml
    require 'vendor/autoload.php';
    use Symfony\Component\Yaml\Yaml;
    Yaml Component #DCMuc16
    

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14. $ composer require symfony/yaml
    require 'vendor/autoload.php';
    use Symfony\Component\Yaml\Yaml;
    $yaml = <<parameters:
    user: symfony
    pass: awesome
    YAML;
    Yaml Component #DCMuc16
    

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15. $ composer require symfony/yaml
    require 'vendor/autoload.php';
    use Symfony\Component\Yaml\Yaml;
    $yaml = <<parameters:
    user: symfony
    pass: awesome
    YAML;
    $config = Yaml::parse($yaml);
    Yaml Component #DCMuc16
    

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16. $ composer require symfony/yaml
    require 'vendor/autoload.php';
    use Symfony\Component\Yaml\Yaml;
    $yaml = <<parameters:
    user: symfony
    pass: awesome
    YAML;
    $config = Yaml::parse($yaml);
    // ['parameters' => ['user' => 'symfony', 'pass' => 'awesome']]
    Yaml Component #DCMuc16
    

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17. BrowserKit
    ClassLoader
    Config
    Asset
    Console
    CssSelector
    Debug
    DependencyInjection
    DomCrawler
    EventDispatcher
    ExpressionLanguage
    Filesystem
    Finder
    Form
    Guard
    HttpFoundation
    HttpKernel
    Icu
    Intl
    Ldap
    Locale
    OptionsResolver
    Process
    PropertyAccess
    PropertyInfo
    Routing
    Security
    Serializer
    Stopwatch
    Templating
    Translation
    Validator
    VarDumper
    Yaml
    Guard
    Workflow
    #DCMuc16
    

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18. $ composer require symfony/finder
    Finder Component #DCMuc16
    

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19. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    #DCMuc16
    

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20. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create();
    #DCMuc16
    

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21. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create()
    ->in('/Users/bicpi/photos');

    #DCMuc16
    

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22. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create()
    ->in('/Users/bicpi/photos')
    ->files();

    #DCMuc16
    

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23. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create()
    ->in('/Users/bicpi/photos')
    ->files()
    ->name('*.jpg');

    #DCMuc16
    

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24. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create()
    ->in('/Users/bicpi/photos')
    ->files()
    ->name('*.jpg')
    ->size('>= 1M');
    #DCMuc16
    

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25. $ composer require symfony/finder
    Finder Component
    require 'vendor/autoload.php';
    use Symfony\Component\Finder\Finder;
    $finder = Finder::create()
    ->in('/Users/bicpi/photos')
    ->files()
    ->name('*.jpg')
    ->size('>= 1M');
    foreach ($finder as $file) {
    echo $file->getFilename() . "\n";
    }
    #DCMuc16
    

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26. Do one thing. 

    Make it excellent. 

    Stay out of the way.
    – Unix Philosophy
    ‘
    #DCMuc16
    

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27. • …
    • Console Command Line Interface
    • Filesystem Basic utilities for the filesystem
    • Translation Tools for internationalisation
    • …
    #DCMuc16
    

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28. Then, based on these components, Symfony2 is also a full-stack web
    framework.
    – Fabien Potencier
    ‘
    http://fabien.potencier.org/what-is-symfony2.html
    What ELSE is Symfony?
    #DCMuc16
    

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29. BrowserKit ClassLoader
    Config
    Asset
    Console
    CssSelector
    Debug
    DependencyInjection
    DomCrawler
    EventDispatcher
    ExpressionLanguage
    Filesystem
    Finder
    Form
    Guard
    HttpFoundation
    HttpKernel
    Icu
    Intl
    Ldap
    Locale
    OptionsResolver
    Process
    PropertyAccess
    PropertyInfo
    Routing
    Security
    Serializer
    Stopwatch
    Templating
    Translation
    Validator
    VarDumper
    Yaml
    Guard
    Workflow
    Your Application
    #DCMuc16
    

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30. ☺
    #DCMuc16
    

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31. Request
    ☺
    1
    #DCMuc16
    

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32. Request
    ☺
    Response
    2
    1
    #DCMuc16
    ?
    

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33. Request
    ☺
    Response
    2
    3
    #DCMuc16
    1
    ?
    

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34. Request
    ☺
    Symfony full-stack
    Response
    #DCMuc16
    1
    2
    3
    

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35. It is all about transforming a
    Request into a Response
    #DCMuc16
    

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36. HttpFoundation\Request

    HTTP Header, $_GET, $_POST, $_COOKIE, $_SESSION, $_SERVER

    #DCMuc16
    

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37. HttpFoundation\Request

    HTTP Header, $_GET, $_POST, $_COOKIE, $_SESSION, $_SERVER

    HttpKernel

    Web framework core, “Glues” the components,

    Loads configuration and “Bundles”, Controls flow, Event Driven
    #DCMuc16
    

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38. HttpFoundation\Request

    HTTP Header, $_GET, $_POST, $_COOKIE, $_SESSION, $_SERVER

    HttpFoundation\Response

    HTTP Status Code, HTTP Header, Content (HTML, JSON …)
    HttpKernel

    Web framework core, “Glues” the components,

    Loads configuration and “Bundles”, Controls flow, Event Driven
    #DCMuc16
    

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39. HTTP specification
    #DCMuc16
    

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40. #DCMuc16
    Code please.
    

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41. Request

    /blog/article?id=34
    #DCMuc16
    

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42. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    

    

    

    

    

    

    

    }
    #DCMuc16
    

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43. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    

    

    

    

    

    

    

    }
    }
    #DCMuc16
    

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44. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    

    

    

    

    

    

    

    }
    }
    #DCMuc16
    

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45. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    

    

    

    

    

    

    }
    }
    #DCMuc16
    

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46. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    $article = $database->findArticle($id);
    

    

    

    

    

    }
    }
    #DCMuc16
    

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47. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    $article = $database->findArticle($id);
    if (!$article) {
    return new Response('Article not found.', 404);
    }
    

    

    

    }
    }
    #DCMuc16
    

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48. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    $article = $database->findArticle($id);
    if (!$article) {
    return new Response('Article not found.', 404);
    }
    

    

    

    }
    }
    #DCMuc16
    Response 404

    Article not found
    

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49. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    $article = $database->findArticle($id);
    if (!$article) {
    return new Response('Article not found.', 404);
    }
    $html = $view->renderArticle($article);
    }
    }
    #DCMuc16
    

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50. Request

    /blog/article?id=34
    class BlogController extends Controller
    {
    /**
    * @Route("/blog/article")
    */
    public function articleAction(Request $request)
    {
    $id = $request->query->get('id');
    $article = $database->findArticle($id);
    if (!$article) {
    return new Response('Article not found.', 404);
    }
    $html = $view->renderArticle($article);
    return new Response($html, 200);
    }
    }
    #DCMuc16
    Response 200

    Article 34
    

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51. During the Request ➾ Response flow,

    many more components will assist
    #DCMuc16
    

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52. • Routing Match URL to controller action
    • Templating Render templates
    • Security Decide about access
    • Config Load configuration
    • Forms Create HTML forms
    • …
    #DCMuc16
    

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53. Who is going to configure all this?
    

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54. Symfony Configuration
    #DCMuc16
    

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55. Symfony Configuration
    dev prod test
    #DCMuc16
    

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56. Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    prod test
    UseCaseTest
    #DCMuc16
    

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57. Front Controller Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    prod test
    UseCaseTest
    #DCMuc16
    

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58. Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    prod test
    UseCaseTest
    Test class
    #DCMuc16
    

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59. Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    new AppKernel('prod', false);
    new AppKernel('dev', true); new AppKernel('test', false);
    prod test
    UseCaseTest
    #DCMuc16
    

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60. Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    new AppKernel('prod', false);
    new AppKernel('dev', true); new AppKernel('test', false);
    config_prod.yml config_test.yml
    config_dev.yml
    prod test
    UseCaseTest
    #DCMuc16
    

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61. Symfony Configuration
    dev
    /app_dev.php/articles /app.php/articles
    new AppKernel('prod', false);
    new AppKernel('dev', true); new AppKernel('test', false);
    config_prod.yml config_test.yml
    config_dev.yml
    prod test
    config.yml
    UseCaseTest
    #DCMuc16
    

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62. database:

    driver: pdo_mysql

    charset: utf8

    

    

    

    # …
    config.yml
    #DCMuc16
    

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63. 

    database:

    driver: pdo_mysql

    charset: utf8

    user: '%db_user%'
    password: '%db_password%'

    

    # …
    config.yml
    #DCMuc16
    

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64. imports:
    - { resource: parameters.yml }
    database:

    driver: pdo_mysql

    charset: utf8

    user: '%db_user%'
    password: '%db_password%'

    

    # …
    config.yml
    #DCMuc16
    

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65. imports:
    - { resource: parameters.yml }
    database:

    driver: pdo_mysql

    charset: utf8

    user: '%db_user%'
    password: '%db_password%'

    

    # …
    config.yml parameters.yml
    parameters:

    

    

    

    

    

    #DCMuc16
    

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66. imports:
    - { resource: parameters.yml }
    database:

    driver: pdo_mysql

    charset: utf8

    user: '%db_user%'
    password: '%db_password%'

    

    # …
    config.yml parameters.yml
    parameters:

    

    

    

    

    

    added to .gitgnore
    #DCMuc16
    

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67. imports:
    - { resource: parameters.yml }
    database:

    driver: pdo_mysql

    charset: utf8

    user: '%db_user%'
    password: '%db_password%'

    

    # …
    config.yml parameters.yml
    parameters:

    

    

    

    

    

    db_user: drupal
    db_password: ThisIsSuperS3cr3t

    

    # …
    added to .gitgnore
    #DCMuc16
    

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68. Dependency Injection
    #DCMuc16
    

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69. Logger Beispiel
    /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    }
    #DCMuc16
    

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70. Logger Beispiel
    /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    // ...

    // ... Do heavy stuff to calculate $weatherData from $zip ...
    // ...

    $theWeather = $this->render('weather.html.twig', $weatherData);
    return new Response($theWeather, 200));
    }
    #DCMuc16
    Lots of stuff happens here to prepare the weather data
    

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71. Logger Beispiel
    Let’s extract this to an independent service class!
    class WeatherForecast
    {
    public function forZip(string $zip): array
    {
    // ...
    // ... Do heavy stuff to calculate $weatherData from $zip ...

    // ...
    return $weatherData;
    }
    }
    #DCMuc16
    

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72. Logger Beispiel
    class WeatherForecast
    {
    public function forZip(string $zip): array
    {
    // ...
    // ... Do heavy stuff to calculate $weatherData from $zip ...

    // ...
    return $weatherData;
    }
    }
    #DCMuc16
    It only does ONE thing!
    

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73. Logger Beispiel
    /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    $weatherForecast = new WeatherForecast();
    $weatherData = $weatherForecast->forZip($zip);
    $theWeather = $this->render('weather.html.twig', $weatherData);
    return new Response($theWeather, 200));
    }
    Then use the service from the controller!
    #DCMuc16
    

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74. Logger Beispiel
    class WeatherForecast
    {
    public function forZip(string $zip): array
    {
    $logger = new FileLogger('/var/log/weather.log');
    // ...
    // ... Things might go wrong ...

    $logger->notice('No forecast found for ZIP '.$zip);

    // ... Things might work

    $logger->info('Forecast provided for ZIP '.$zip);
    // ...
    return $weatherData;
    }
    }
    But now imagine a dependency to a Logger service
    #DCMuc16
    

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75. Logger Beispiel
    class WeatherForecast
    {
    public function forZip(string $zip): array
    {
    $logger = new FileLogger('/var/log/weather.log');
    // ...
    // ... Things might go wrong ...

    $logger->notice('No forecast found for ZIP '.$zip);

    // ... Things might work

    $logger->info('Forecast provided for ZIP '.$zip);
    // ...
    return $weatherData;
    }
    }
    But now imagine a dependency to a Logger service
    #DCMuc16
    • How to test this code?
    • How to switch the log file?
    • How to use a different logger?
    

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76. Logger Beispiel
    class WeatherForecast

    {
    private $logger;
    public function __construct($logger)

    {
    $this->logger = $logger;
    }
    public function forZip(string $zip): array 

    {
    // ...
    $this->logger->info('Forecast provided for ZIP '.$zip);
    // ...
    }
    }
    Why not inject the logger dependency?
    #DCMuc16
    

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77. Logger Beispiel
    class WeatherForecast

    {
    private $logger;
    public function __construct(Psr\Log\LoggerInterface $logger)

    {
    $this->logger = $logger;
    }
    public function forZip(string $zip): array 

    {
    // ...
    $this->logger->info('Forecast provided for ZIP '.$zip);
    // ...
    }
    }
    And type hint it against an interface contract?
    #DCMuc16
    

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78. Logger Beispiel
    class FileLogger implements Psr\Log\LoggerInterface

    {

    

    private $logFilePath;
    public function __construct(string $logFilePath)

    {
    $this->logFilePath = $logFilePath;
    }
    public function notice($message) { … }

    public function info($message) { … }

    

    …
    }
    #DCMuc16
    

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79. Logger Beispiel
    /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    $logger = new FileLogger('/var/log/weather.log');

    $weatherForecast = new WeatherForecast($logger);

    // ...
    }
    Inject the logger dependency into the constructor
    #DCMuc16
    

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80. #DCMuc16
    Service Container
    

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81. services:

    config.yml
    #DCMuc16
    Now shift the service creation to a service container
    

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82. services:

    logger:

    class: FileLogger

    

    

    

    config.yml
    #DCMuc16
    

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83. services:

    logger:

    class: FileLogger

    arguments:

    - '/var/log/weather.log'
    

    

    

    config.yml
    #DCMuc16
    

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84. services:

    logger:

    class: FileLogger

    arguments:

    - '/var/log/weather.log'
    weather_forecast:

    class: WeatherForecast

    config.yml
    #DCMuc16
    

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85. services:

    logger:

    class: FileLogger

    arguments:

    - '/var/log/weather.log'
    weather_forecast:

    class: WeatherForecast

    arguments:

    - '@logger'
    config.yml
    #DCMuc16
    

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86. /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    $weatherForecast = $this->container->get('...');
    $weatherData = $weatherForecast->forZip($zip);
    $theWeather = $this->render('weather.html.twig', $weatherData);
    return new Response($theWeather, 200));
    }
    #DCMuc16
    

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87. /**
    * @Route("/weather/at/{zip}")
    */
    public function weatherAction(string $zip)
    {
    $weatherForecast = $this->container->get('weather_forecast');
    $weatherData = $weatherForecast->forZip($zip);
    $theWeather = $this->render('weather.html.twig', $weatherData);
    return new Response($theWeather, 200));
    }
    #DCMuc16
    

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88. config.yml
    #DCMuc16
    services:

    logger:

    class: NullLogger
    weather_forecast:

    class: WeatherForecast

    arguments:

    - '@logger'

    

    

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89. config.yml
    #DCMuc16
    services:

    logger:

    class: DatabaseLogger
    weather_forecast:

    class: WeatherForecast

    arguments:

    - '@logger'

    

    

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90. #DCMuc16
    Console
    

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91. File upload script with some flags, options and arguments
    #DCMuc16
    $ ./upload-files --overwrite cat-1.jpg cat-2.jpg cat-3.jpg 

    

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92. File upload script with some flags, options and arguments
    #DCMuc16
    $ ./upload-files --overwrite cat-1.jpg cat-2.jpg cat-3.jpg 

    Uploading 'cat-1.jpg' ...

    

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93. File upload script with some flags, options and arguments
    #DCMuc16
    $ ./upload-files --overwrite cat-1.jpg cat-2.jpg cat-3.jpg 

    Uploading 'cat-1.jpg' ...

    Uploading 'cat-2.jpg' ...

    

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94. File upload script with some flags, options and arguments
    #DCMuc16
    $ ./upload-files --overwrite cat-1.jpg cat-2.jpg cat-3.jpg 

    Uploading 'cat-1.jpg' ...

    Uploading 'cat-2.jpg' ...

    Uploading 'cat-3.jpg' ...
    

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95. #DCMuc16
    Now we gonna tackle $_SERVER['argv'] !
    

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96. use Symfony\Component\Console\Command\Command;
    

    class UploadFilesCommand extends Command
    {
    }
    #DCMuc16
    #DCMuc16
    

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97. use Symfony\Component\Console\Command\Command;
    

    class UploadFilesCommand extends Command
    {
    protected function configure()
    {
    // ...
    }
    }
    #DCMuc16
    

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98. use Symfony\Component\Console\Command\Command;
    use Symfony\Component\Console\Input\InputInterface;
    use Symfony\Component\Console\Output\OutputInterface;
    class UploadFilesCommand extends Command
    {
    protected function configure()
    {
    // ...
    }
    protected function execute(InputInterface $input, OutputInterface $output)
    {
    // ...
    }
    }
    #DCMuc16
    

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99. class UploadFilesCommand extends Command
    {
    protected function configure()
    {
    

    }
    protected function execute(InputInterface $input, OutputInterface $output)
    {
    }
    }
    #DCMuc16
    

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100. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files');

     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     }
     }
     #DCMuc16
     

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101. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     }
     }
     #DCMuc16
     

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102. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this
     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?')
     ->addArgument('filePaths', InputArgument::IS_ARRAY, 'Files to upload?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     

     }
     }
     #DCMuc16
     

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103. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?')
     ->addArgument('filePaths', InputArgument::IS_ARRAY, 'Files to upload?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     }
     }
     #DCMuc16
     

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104. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?')
     ->addArgument('filePaths', InputArgument::IS_ARRAY, 'Files to upload?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     $overwrite = $input->hasOption('overwrite');
     }
     }
     #DCMuc16
     

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105. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?')
     ->addArgument('filePaths', InputArgument::IS_ARRAY, 'Files to upload?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     $overwrite = $input->hasOption('overwrite');
     foreach ($input->getArgument('filePaths') as $path) {
     }
     }
     }
     #DCMuc16
     

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106. class UploadFilesCommand extends Command
     {
     protected function configure()
     {
     $this

     ->setName('upload-files')
     ->addOption('overwrite', 'o', InputOption:: VALUE_NONE, 'Overwrite files?')
     ->addArgument('filePaths', InputArgument::IS_ARRAY, 'Files to upload?');
     }
     protected function execute(InputInterface $input, OutputInterface $output)
     {
     $overwrite = $input->hasOption('overwrite');
     foreach ($input->getArgument('filePaths') as $path) {
     $output->writeLn("Uploading '{$path}' ... ");
     // ... do the upload depending on $overwrite
     }
     }
     }
     #DCMuc16
     

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107. Anything else?
     #DCMuc16
     

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108. Bundles
     • ~ PlugIns, but even better
     • Everything in Symfony Full-Stack is a Bundle
     • Yes, Symfony Full-Stack itself is a Bundle
     • Core and custom code is in Bundles
     • Registered in HttpKernel
     #DCMuc16
     

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109. • PSR – PHP Standards Recommendations
     • HTTP Specification
     Symfony ♥ Standards
     #DCMuc16
     

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110. • Git & GitHub
     • Semantic Versioning – Breaking.Feature.Fix
     • Dependency Injection
     • Event Driven
     • Popularize ORMs
     • New level of code quality and architecture
     • Command Line Tools
     Symfony drives Innovation
     … just to name a few
     (in the PHP world, at least …)
     #DCMuc16
     

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111. • Twig
     • Composer
     • Monolog
     • Swiftmailer
     • Silex
     • PHP CS Fixer

     …
     Symfony “by-products”
     #DCMuc16
     

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112. • Outstanding Documentation
     • Huge ecosystem of 3rd-party bundles
     • Creates many “celebrities”
     • Conferences
     • Certification
     Symfony’s Community
     (and SensioLabs)
     #DCMuc16
     

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113. Evolution, not Revolution
     Symfony 3
     #DCMuc16
     

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114. @bicpi
     Questions?
     https://philipp-rieber.net
     #DCMuc16
     

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115. Links
     • http://symfony.com/
     • https://github.com/symfony
     • http://fabien.potencier.org/what-is-symfony2.html
     • http://symfony.com/doc/current/create_framework
     • http://www.php-fig.org/
     #DCMuc16
     

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