The Great Framework Kumbaya

Time to gather our frameworks around a warm camp fire and see just how much we have in common In this presentation, we take a flat PHP4-style application and gently migrate it into our own "framework", that uses components from Symfony2, Zend Framework 2, Aura and a library called Pimple. By the end, you'll see how any ugly application can take advantage of the many wonderful tools available to PHP developers. You'll also learn exactly how *any* framework actually works under the hood by hooking up routing, controllers, services and events.

Transcript

1. by your friend:
   !
   Ryan Weaver
   @weaverryan
   The Great
   Framework Kumbaya
   

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2. KnpUniversity.com
   
   github.com/weaverryan
   Who is this Happy Camper?
   > Lead for the Symfony documentation

   > KnpLabs US - Symfony Consulting,
   
   training, Kumbaya
   
   !
   > Writer for KnpUniversity.com Tutorials
   > Husband of the much more
   
   talented @leannapelham
   

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3. !
   Personal
   Homepage
   

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6. Yep, that’s a
   
   sausage hat
   wink wink
   
   that’s me!
   @jmikola
   

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7. http://bit.ly/php-camp
   @weaverryan
   

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8. Open our Database connection
   // index.php
   

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9. Try to get a clean URI
   // index.php
   

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10. Render the homepage
    // index.php
    

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11. List our happy campers!
    // index.php
    

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12. Why don’t we code
    
    like this anymore?
    

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13. The Tribes of PHP
    meet the UN
    

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14. Formerly Solar
    

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15. > The United Nations of PHP
    
    !
    > Equally Important
    
    !
    > Equally dysfunctional (like any happy family)
    @weaverryan
    

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17. FIG != collaboration
    

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18. FIG Empowers You…
    

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19. To become
    best friends
    with all the
    frameworks
    

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20. A) Reading request info could be better
    
    !
    B) can’t set headers later on
    
    !
    C) front controller
    
    !
    D) little URL control
    
    !
    E) all objects are global
    
    !
    F) 1 giant file (no separation)
    
    !
    G) HTML and PHP is mixed!
    Problems
    @weaverryan
    

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21. !
    $_SERVER[‘HOST']
    !
    header('X-POWERED-BY: crap');
    

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24. composer require symfony/http-foundation
    … used by Laravel, Silex, Symfony, Drupal 8…
    

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25. Current Status
    @weaverryan
    

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26. WOW!
    

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27. ... becomes ...
    The “Request” object
    

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28. ... becomes ...
    The “Request” object
    

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29. ... becomes ...
    The “Response” object
    

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30. !
    if ($url == '/') {
    

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31. if ($uri == '/' || $uri == '') {
    // ...
    } elseif ($uri == '/attendees') {
    // ...
    } else {
    // ...
    }
    @weaverryan
    Our app is a giant gross “if” statement
    Problems
    Grabbing a piece from the URL like
    
    /blog/my-blog-post will take some work
    

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32. Aura.Router
    

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33. composer require aura/router
    First composer require
    

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34. Then Celebrate!
    

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35. @weaverryan
    Current Status
    

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36. 1) Map URI to “controller”
    

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40. 2) Execute the controller*
    * each controller is a flat function
    

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41. The Controllers
    

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42. $kitten--
    

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43. 1. Request cleans the URI
    
    2. Router matches the URI to a route, returns a 

    “controller” string
    
    3. We execute the controller function
    
    4. The controller creates a Response object
    
    5. We send the Response headers and content
    The Big Picture
    @weaverryan
    

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44. our 20 line framework
    solves…
    

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45. A) Reading request info could be better
    
    !
    B) can’t set headers later on
    
    !
    C) front controller
    
    !
    D) little URL control
    
    !
    E) all objects are global
    
    !
    F) 1 giant file (no separation)
    
    !
    G) HTML and PHP is mixed!
    Problems
    @weaverryan
    

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46. !
    Global objects
    are universally hated
    

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47. > We’ve got lots of random, disorganized
    
    objects floating around and some depend
    
    on others
    Problems
    > And we can’t easily access them from
    
    within our controllers
    @weaverryan
    

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48. Pimple!
    … used by Silex
    
    … name loved by ???
    

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49. composer require pimple/pimple
    First composer require
    

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50. Then Celebrate!
    

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51. Centralize the db connection
    

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52. Centralize the db connection
    

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53. Pass the container
    to the controller
    

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54. $kitten++
    

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55. Container all the things!
    

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58. With everything in the
    container, our “framework”
    just got skinny
    

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61. !
    Tackling
    Disorganization
    

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62. We have 1 file with everything mixed
    
    !
    !
    1) Creation of container & objects
    
    2) Definition of routes
    
    3) Definition of controllers
    
    4) The “framework” code that executes
    
    everything
    
    Problems
    @weaverryan
    

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63. We have 1 file with everything mixed
    
    !
    1) services.php
    
    2) routes.php
    
    3) controllers.php
    
    4) bootstrap.php (framework code)
    
    Basic Solution
    @weaverryan
    

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64. index.php
    Nothing to see here...
    

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65. bootstrap.php
    …
    

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66. services.php
    

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67. routing.php
    

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68. controllers.php
    

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69. bootstrap.php
    … all the same “stuff”…
    

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70. All Frameworks Work Like This
    

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73. !
    
    

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74. Problems
    @weaverryan
    bleh!
    

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75. composer require twig/twig
    First composer require
    

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76. Then Celebrate!
    

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77. Before
    

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78. After
    

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79. views/attendees.twig
    

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80. Getting kinda easy, right?
    

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81. What’s available?
    Search GitHub!
    

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82. All Your Frameworks
    Are Belong to Us
    

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83. To focus on the
    
    interesting problems…
    
    !
    (business problems)
    
    

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84. … we need to remove the
    boring, repetitive problems…
    

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85. … but don’t limit yourself
    to one “world”…
    Symfony Developer
    Laravel Developer
    Drupal Developer
    Silex Developer
    

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86. … be a PHP Developer
    

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87. Thanks!
    Ryan Weaver
    
    @weaverryan
    KnpUniversity.com
    Symfony, Behat, Twig, OO, etc Tutorial Screencasts
    https://joind.in/11898
    

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