Solid Principles & Design patterns with PHP examples

Solid Principles & Design patterns with PHP examples

1. Solid Principles
&
Design Patterns
with PHP examples

2. FEDERICO LOZADA MOSTO
Facebook: @mostofreddy
Linkedin: ar.linkedin.com/in/federicolozadamosto
Github: @mostofreddy
Instagram: @mostofreddy

3. ✓Introduction to OOP
✓SOLID principles
✓Gof Patterns
✓Other patterns
Topics

4. OOP
Object Oriented Programming

5. ✓Class
✓Object
✓Instance
✓Polymorphism
✓Hierarchy
✓Coupling & Cohesion
Concepts
✓Encapsulation
✓Attributes & methods
✓Messages
✓Interface
✓Accessors (protected, private, public)
✓Composition

6. SOLID
Principles

7. S
O
L
I
D
Open/Closed Principle
Single Responsibility Principle
Liskov Substitution Principle
Interface Segregation Principle
Dependency Inversion

8. S
Single Responsibility Principle
A class should have one and only one reason to
change, meaning that a class should have only
one job.“

9. Single Responsibility Principle !

10. Single Responsibility Principle !

11. Single Responsibility Principle :)

12. Single Responsibility Principle :)

13. O
Open/Closed Principle
“
Objects or entities should be open for extension,
but closed for modification.

14. Open / Close Principle !

15. Open / Close Principle :)

16. L
Liskov Substitution Principle
Let q(x) be a property provable about objects of
x of type T. Then q(y) should be provable for
objects y of type S where S is a subtype of T.
“

17. Liskov Substitution Principle :)

18. I
Interface Segregation Principle
A client should never be forced to implement an
interface that it doesn't use or clients shouldn't
be forced to depend on methods they do not
use
“

19. Interface Segregation Principle :)

20. D
Dependency inversion
Entities must depend on abstractions not on
concretions. It states that the high level module
must not depend on the low level module, but
they should depend on abstractions
“

21. Patterns

22. GoF Patterns
The Gang of Four

23. GoF Patterns
✓Creational
provide ways to instantiate single objects or groups of related objects
✓Structural
provide a manner to define relationships between classes or objects
✓Behavioural
define manners of communication between classes and objects

24. Abstract Factory | creational

25. Factory Method | creational

26. Factory Method | creational

27. Factory Method | creational

28. Builder | creational

29. Builder | creational

30. Builder | creational

31. Builder | creational

32. Builder | creational

33. Singleton | creational

34. Singleton | creational

35. Adapter | structural

36. Adapter | structural

37. Adapter | structural

38. Adapter | structural

39. Decorator | structural

40. Decorator | structural

41. Decorator | structural

42. Decorator | structural

43. Decorator | structural

44. Facade | structural

45. Facade | structural

46. Facade | structural

47. Command | Behavioral

48. Command | Behavioral

49. Command | Behavioral

50. Iterator | Behavioral

51. Iterator | Behavioral

52. Iterator | Behavioral

53. Strategy | Behavioral

54. Strategy | Behavioral

55. Strategy | Behavioral

56. Null Object | Behavioral

57. Null Object | Behavioral

58. More Patterns

59. MVC | ….

60. Active Record | persistence

61. Repository | persistence

62. Service Locator | Inversion of control

63. Service Locator | Inversion of control

64. Service Locator | Inversion of control

65. Dependency Injection | Inversion of control

66. Dependency Injection | Inversion of control

67. Dependency Injection | Inversion of control

68. Pipeline

69. Pipeline

70. Middleware

71. Middleware

72. Middleware

73. Questions?

74. Thanks!

75. Thanks!
FEDERICO LOZADA MOSTO
FB: mostofreddy
In: ar.linkedin.com/in/federicolozadamosto
Git: mostofreddy
Ig: mostofreddy

76. {
"require": {
"php": ">=5.5.0",
"ext-gd": "*",
"lib-curl": "*"
}
}
Iconos
PHP extension
& libraries
libraries available:
curl, iconv, libxml, openssl, pcre, uuid, xsl
Tip: composer show --platform
!
!