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Beginning OOP in PHP
- 1. Beginning OOP in PHP OpenWest- May 7, 2015 David Stockton
- 2. David Stockton VP ofTechnology, i3logix Denver, CO Coding in PHP for over 17 years Organizer of the Front Range PHP User Group for 5 years Board of Directors, Front Range Web Developer Assoc. @dstockto http://davidstockton.com http://tddftw.com https://www.youtube.com/user/dstockto/videos #phpmentoring #phpstudygroup
- 3. What we’ll talkabout • Classes • Objects • Interfaces • Inheritance • Methods • Properties • Visibility Modifiers • Static • Constructors
- 4. Why bother withOOP? Lack of Abstraction Problems with Procedural Code
- 5. Why bother withOOP? Data stores as structure Problems with Procedural Code
- 6. Why bother withOOP? Functions are global and not related to structures Problems with Procedural Code
- 7. What is aclass? A blueprint
- 8.
- 9. Defines state What doesa class do?
- 10. What are properties? Information/ Data on an object
- 12. What does aclass do? Defines behavior
- 13. What are methods? Behaviorson a class
- 15. What’s an object? Aninstance of a class
- 17. Constructor One of PHP’s“magic” methods __construct Used to initialize the properties of the object
- 21.
- 23. Public Method or propertyis available to anything From anywhere
- 24. Protected Property or methodavailable within the class or class’s inheritance structure (both ways)
- 25. Private Method or propertyonly available within the object
- 26.
- 28.
- 30. “is a” “is a” “isa” “is a” “is a” “is a”
- 32. “is a” “is a” “isa” “is a” “is a” “is a”
- 33.
- 34. What is aninterface? Commonly named functionality
- 35. What is aninterface? A contract between caller and callee
- 36. Why are interfaces important? Allowscommon language and API for different classes
- 41. Static Method or classavailable at Class level, no object needed Changes affect all instances of the class
- 43. Abstract Classes Provides functionalityto child classes Cannot be instantiated
- 46.
- 47.