Demystify the magic of the Dependency Injection Container

Symfony offer many great features that make our lives much easier. Thanks to dependency injection and service containers, for example, we never have to worry about whether a class is available somewhere.
But what has been given to us for years is actually not even a function of PHP.
But what exactly is a "container" and how exactly does it enable us to magically always have everything "available"?
In this workshop, we will not only take a detailed look at what "dependency injection" actually is.
But also what exactly a container is and to build it together step by step in order to be able to understand it even better in our frameworks in the future.

Transcript

1. Demystify the magic of the Container
2. Hi, I’m Oliver Kossin – Symfony and PHP-Developer for 10 Years – Work in Cologne at – Loves football, traveling and DIY projects https://github.com/TheCadien
3. Why a Talk about the Container
8. Why a Talk about the Container
9. In other words
10. „Symfony DI f***ing awesome! Thank you Nicolas“
11. „Symfony DI f***ing awesome! Thank you Nicolas“ Someone - Yesterday
12. Let’s take a look
13. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
14. Oliver while he tries to explain!
16. The Star fl eet – Founded 2151
17. The Star fl eet – Founded 2151 – Exploration (where no one has gone before)
18. The Star fl eet – Is an organisation
19. The Star fl eet – Is an organisation – A List of – Ships – Star fl eet of fi cer
20. The Star fl eet – Is an organisation – A List of IDs – Ships – Star fl eet of fi cer – …
21. NCC-1701 D (Enterprise)
22. NCC-1701 D (Enterprise) Galaxy Class
23. NCC-1701 D (Enterprise) Galaxy Class NCC-71832 (Odyssey)
24. NCC-1701 D NCC-71832
25. The Star fl eet
26. The Star fl eet – NCC-1701 D – SC-231-427 – SP-937-215 – NX-01 – NCC-1701 – NCC-74656 – 47-Alpha–612 – …
27. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
28. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
29. „Your Star fl eet is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
30. „Your Star fl eet is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
31. „Your Star fl eet is full of useful Starships: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
32. „Your Star fl eet is full of useful Starships: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
33. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
34. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
35. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you explore the Universe!! 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
36. The Container… is the Star fl eet!!
37. Oliver while talking about Star Trek
38. Lets build by our own
39. https://github.com/massiveart/symfony-live-demystify-container
40. Step 1 - Birth of Star fl eet
53. Thank you!
54. Step 2 - Engage!!!!
58. –
67. Step 3 - Say my name
78. Step 4 - Becoming sustainable
79. Miles O'Brien
80. Miles O'Brien – Star fl eet Chief
81. Miles O'Brien – Star fl eet Chief – Husband of Keiko O'Brien
82. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years
84. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years – Since 2369 on Deep Space 9
86. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years – Since 2369 on Deep Space 9 – Work also at the De fi ant
95. –
96. Step 5 - The Star fl eet Command!
97. Star fl eet Command – Star fl eet Administration
98. Star fl eet Command
 – Star fl eet Administration – Registration new Ships – Registration new Of fi cer – ..
105. Step 6 - The next Generation!
109. –
110. –
114. Interested in more ?
115. Cheers
116. Thank you!