MidwestPHP Symfony2 Internals
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The document provides an overview of Symfony2 internals. It discusses the main Symfony2 components like HttpFoundation and DependencyInjection. It also covers Composer, autoloading standards like PSR-0, and how the request-response cycle works in Symfony2. The document demonstrates these concepts and also discusses how Symfony2 uses events.
![Fully Qualified Name (FQN)
∖Doctrine∖DBAL∖Driver
[lib_path]/Doctrine/DBAL/Driver.php
File](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-29-320.jpg)
![Fully Qualified Name (FQN)
∖Doctrine∖DBAL∖Driver
∖Twig_Lexer
[lib_path]/Doctrine/DBAL/Driver.php
File](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-30-320.jpg)
![Fully Qualified Name (FQN)
∖Doctrine∖DBAL∖Driver
∖Twig_Lexer
[lib_path]/Doctrine/DBAL/Driver.php
[lib_path]/Twig/Lexer.php
File](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-31-320.jpg)
![bool spl_autoload_register(
[callable $autoload_function,
[bool $throw = true,
[bool $prepend = false]]]
)](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-32-320.jpg)
![http://www.ietf.org/rfc/rfc2616.txt
Request = Request-Line
*(header CRLF)
CRLF
[ message-body ]](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-46-320.jpg)
![CRLF
Request = Request-Line
*(header CRLF)
CRLF
[ message-body ]](https://image.slidesharecdn.com/midwestphpsymfonyinternals-130303133910-phpapp01/85/MidwestPHP-Symfony2-Internals-94-320.jpg)
MidwestPHP Symfony2 Internals
- 1. Symfony2 Internals Raúl Fraile
- 2. Who am I?
- 3. Raúl Fraile • Software developer at • I live in Spain • PHP 5.3 Zend Certified Engineer • Symfony Certified Developer • Symfony2 lover ❤ • LadybugPHP: Simple and extensible PHP dumper • Future dad ☺ @raulfraile
- 4. Should I care about Symfony2 internals?
- 6. Yes!
- 9. Topics
- 10. 1. Symfony2 components 2. Composer 3. Autoloading & PSR-0 4. Request & Response 5. Demo 1 6. Symfony2 full-stack framework 7. Events 8. Demo 2
- 11. Components
- 12. Set of decoupled and standalone libraries
- 13. Implement common features needed to develop websites
- 14. The foundation of the Symfony2 full-stack framework
- 15. BrowserKit Finder Security ClassLoader Form Serializer Config HttpFoundation Templating Console HttpKernel Translation CssSelector Locale Validator DependencyInjection Process Yaml DomCrawler OptionsResolver EventDispatcher Routing
- 16. BrowserKit Finder Security ClassLoader Form Serializer Config HttpFoundation Templating Console HttpKernel Translation CssSelector Locale Validator DependencyInjection Process Yaml DomCrawler OptionsResolver PropertyAccess 2.2.0 EventDispatcher Routing StopWatch
- 19. ... after some concepts
- 20. Composer
- 22. Composer is a dependency manager for PHP
- 23. { "require": { "symfony/http-foundation": "v2.2.0", "doctrine/orm": ">=2.2.3", } }
- 25. Autoload
- 26. Triggered whenever we need a class or interface not already defined
- 27. Fully Qualified Name (FQN) File
- 28. Fully Qualified Name (FQN) ∖Doctrine∖DBAL∖Driver File
- 29. Fully Qualified Name (FQN) ∖Doctrine∖DBAL∖Driver [lib_path]/Doctrine/DBAL/Driver.php File
- 30. Fully Qualified Name (FQN) ∖Doctrine∖DBAL∖Driver ∖Twig_Lexer [lib_path]/Doctrine/DBAL/Driver.php File
- 31. Fully Qualified Name (FQN) ∖Doctrine∖DBAL∖Driver ∖Twig_Lexer [lib_path]/Doctrine/DBAL/Driver.php [lib_path]/Twig/Lexer.php File
- 32. bool spl_autoload_register( [callable $autoload_function, [bool $throw = true, [bool $prepend = false]]] )
- 33. <?php include_once(__DIR__.'/MyLoader.php'); include_once(__DIR__.'/vendor/Twitter/Loader.php'); spl_autoload_register(array('MyLoader', 'autoload')); spl_autoload_register(array('Loader', 'autoload')); $tweet = new Tweet(); // vendor/Twitter/Tweet.php $book = new MyBook(); // classes/My/Book.php
- 34. <?php include_once(__DIR__.'/MyLoader.php'); include_once(__DIR__.'/vendor/Twitter/Loader.php'); spl_autoload_register(array('MyLoader', 'autoload')); spl_autoload_register(array('Loader', 'autoload')); $tweet = new Tweet(); // vendor/Twitter/Tweet.php $book = new MyBook(); // classes/My/Book.php new Tweet()
- 35. <?php include_once(__DIR__.'/MyLoader.php'); include_once(__DIR__.'/vendor/Twitter/Loader.php'); spl_autoload_register(array('MyLoader', 'autoload')); spl_autoload_register(array('Loader', 'autoload')); $tweet = new Tweet(); // vendor/Twitter/Tweet.php $book = new MyBook(); // classes/My/Book.php new Tweet() MyLoader::autoload(‘Tweet’)
- 36. <?php include_once(__DIR__.'/MyLoader.php'); include_once(__DIR__.'/vendor/Twitter/Loader.php'); spl_autoload_register(array('MyLoader', 'autoload')); spl_autoload_register(array('Loader', 'autoload')); $tweet = new Tweet(); // vendor/Twitter/Tweet.php $book = new MyBook(); // classes/My/Book.php new Tweet() MyLoader::autoload(‘Tweet’) Loader::autoload(‘Tweet’)
- 37. <?php include_once(__DIR__.'/MyLoader.php'); include_once(__DIR__.'/vendor/Twitter/Loader.php'); spl_autoload_register(array('MyLoader', 'autoload')); spl_autoload_register(array('Loader', 'autoload')); $tweet = new Tweet(); // vendor/Twitter/Tweet.php $book = new MyBook(); // classes/My/Book.php new Tweet() MyLoader::autoload(‘Tweet’) Loader::autoload(‘Tweet’) include __DIR__.’/vendor/Twitter/Tweet.php’
- 38. This is a mess...
- 39. ... we need a standard!
- 40. PSR-0
- 42. In summary: 1) ‘/’ and ‘_’ are converted to DIRECTORY_SEPARATOR 2) Suffixed with .php
- 43. Time for the demo!
- 44. Request
- 45. HttpFoundation Component Object Oriented abstraction of an HTTP request
- 46. http://www.ietf.org/rfc/rfc2616.txt Request = Request-Line *(header CRLF) CRLF [ message-body ]
- 47. http://www.ietf.org/rfc/rfc2616.txt Request-Line
- 48. =
- 49. Method
- 50. SP
- 71. Request-URI
- 72. SP
- 93. HTTP-Version
- 94. CRLF Request = Request-Line *(header CRLF) CRLF [ message-body ]
- 95. http://www.ietf.org/rfc/rfc2616.txt Request-Line
- 96. =
- 97. Method
- 98. SP
- 119. Request-URI
- 120. SP
- 141. HTTP-Version
- 142. CRLF Request = Request-Line *(header CRLF) CRLF [ message-body ] General
- 143. headers:
- 144. Cache-Control,
- 145. Transfer-Encoding,
- 146. Via... Request
- 147. headers:
- 148. Accept-Encoding,
- 149. Accept-Language,
- 150. If-Match... Entity
- 151. headers:
- 152. Content-Encoding,
- 153. Content-Language,
- 154. Expires...
- 155. Hypertext Transfer Protocol GET /index.php HTTP/1.1 Host: test.com Accept-Language:en;q=0.8 Accept-Encoding:gzip User-Agent: Mozilla/5.0
- 156. Hypertext Transfer Protocol $_GET GET /index.php HTTP/1.1 $_POST Host: test.com Accept-Language:en;q=0.8 $_COOKIE Accept-Encoding:gzip User-Agent: Mozilla/5.0 $_FILES $_SERVER
- 157. Hypertext Transfer Protocol $_GET query request GET /index.php HTTP/1.1 $_POST cookies Host: test.com files Accept-Language:en;q=0.8 $_COOKIE server Accept-Encoding:gzip headers User-Agent: Mozilla/5.0 $_FILES getHost getClientIp $_SERVER ...
- 158. Response
- 159. HttpFoundation Component Object Oriented abstraction of an HTTP response
- 160. http://www.ietf.org/rfc/rfc2616.txt Response = Status-Line *(header CRLF) CRLF [ message-body ]
- 161. http://www.ietf.org/rfc/rfc2616.txt Status-Line
- 162. =
- 163. HTTP-Version
- 164. SP
- 183. Status-Code
- 184. SP
- 203. Reason-Phrase
- 204. CRLF Response = Status-Line *(header CRLF) CRLF [ message-body ]
- 205. http://www.ietf.org/rfc/rfc2616.txt Status-Line
- 206. =
- 207. HTTP-Version
- 208. SP
- 227. Status-Code
- 228. SP
- 247. Reason-Phrase
- 248. CRLF Response = Status-Line *(header CRLF) CRLF [ message-body ] General
- 249. headers:
- 250. Cache-Control,
- 251. Pragma,
- 252. Via... Response
- 253. headers:
- 254. ETag,
- 255. Vary,
- 257. headers:
- 258. Content-Encoding,
- 259. Content-Language,
- 260. Expires...
- 261. Headers Version Content Status code Status text Charset ...
- 262. Hypertext Transfer Protocol Headers HTTP/1.1 200 OK Version Content-type: text/html Date:Sun, 3 Mar 2013 07:10:42 GMT Content Status code !DOCTYPE HTML Status text html lang=es head Charset meta charset=utf-8 ... ...
- 263. Symfony2 full-stack framework
- 264. Components Vendors + ➕ Bundles Bridges --------------------- Full-stack
- 265. framework
- 266. Vendors
- 267. Project dependencies (third party libraries)
- 268. Doctrine, Twig, Assetic, Monolog and SwiftMailer
- 269. Doctrine, Twig, Assetic, Monolog and SwiftMailer don’t
- 270. reinvent
- 271. the
- 272. wheel, these
- 273. libraries
- 274. are
- 275. awesome!
- 276. Bundles
- 277. “A bundle is a directory that has a well-defined structure and can host anything from classes to controllers and web resources.” Source: symfony.com
- 278. FrameworkBundle SecurityBundle TwigBundle WebProfilerBundle AsseticBundle MonologBundle SwiftmailerBundle
- 279. Bridges
- 280. Extend components and libraries to be used in Symfony2
- 281. Example: The Twig Bridge adds useful functions to use forms, routing, security and translations.
- 282. Example: The Twig Bridge adds useful functions to use forms, routing, security and form_enctype translations. form_widget form_errors form_label form_row form_rest csrf_token
- 283. Example: The Twig Bridge adds useful functions to use forms, routing, security and form_enctype url translations. form_widget path form_errors form_label form_row form_rest csrf_token
- 284. Example: The Twig Bridge adds useful functions to use forms, routing, security and form_enctype url translations. is_granted form_widget path form_errors form_label form_row form_rest csrf_token
- 285. Example: The Twig Bridge adds useful functions to use forms, routing, security and form_enctype url translations. is_granted form_widget path trans form_errors transchoice form_label form_row form_rest csrf_token
- 286. Events
- 288. Mediator pattern: decouple a Producer from a Consumer Consumer Producer Consumer Consumer
- 289. Mediator pattern: decouple a Producer from a Consumer Consumer Producer Mediator Consumer Consumer
- 290. Mediator pattern: decouple a Producer from a Consumer Consumer Producer Mediator Consumer Consumer addListener() dispatch()
- 291. Mediator pattern: decouple a Producer from a Consumer Consumer Producer Mediator Consumer Consumer addListener() dispatch() http://goo.gl/Fr16Z Mediators - Programming With Anthony
- 292. kernel.request
- 293. Dispatched as soon as the request arrives
- 294. If any listener return a Response object, all other listeners won't be called.
- 295. Used by FrameworkBundle to populate the _controller value
- 296. kernel.controller
- 297. Once the controller is resolved, this event is dispatched
- 298. kernel.view
- 299. Called only if the controller does not return a Response
- 300. Goal: build a Response object from the return value of the Controller
- 301. kernel.response
- 302. Allow to modify or replace the Response object after its creation
- 303. Allow to modify or replace the Response object after its creation i.e.
- 304. adding
- 305. the
- 306. Google
- 307. Analytics
- 308. tracker
- 309. code?
- 310. Allow to modify or replace the Response object after its creation i.e.
- 311. adding
- 312. the
- 313. Google
- 314. Analytics
- 315. tracker
- 316. code? You
- 317. could...
- 318. but
- 319. there
- 320. are
- 321. better
- 322. ways
- 323. ☺
- 324. kernel.terminate
- 325. Called once the Response has been sent
- 326. Used to run expensive post-response jobs
- 327. Used to run expensive post-response jobs i.e.
- 328. sending
- 329. emails,
- 330. processing
- 331. data...
- 332. kernel.exception
- 333. Last chance to convert an Exception into a Response object
- 334. Events demo
- 335. Thank you! Questions? https://joind.in/8225