Introductions -

First starts with PHP4 features. PHP4 started up with object-oriented concepts like as c++. PHP4 got almost all the OOPs features. With little difference in functionality…

Below are PHP4 added features -

1. class

2. extends

3. Constructors

4. Scope Resolution Operator (::)

5. parent

6. Serializing objects – objects in sessions

7. The magic functions __sleep and __wakeup

8. References inside the constructor

9. Comparing objects

PHP 5 now came up with new Object Model. Even php4 contains the object model functionalities but PHP5 handling of objects has been completely rewritten, allowing for better performance and more features.

Features Of PHP5 -

10. Constructors and Destructor
    

11. Visibility

12. Scope Resolution Operator (::)

13. Static Keyword

14. Class Constants

15. Class Abstraction

16. Object Interfaces

17. Overloading

18. Object Iteration

19. Patterns

20. Magic Methods

21. Final Keyword

22. Object cloning

23. Comparing objects

24. Reflection

25. Type Hinting

26. Late Static Binding

Some of the above features are in PHP4. But still PHP5 has got improved functionalities on above features. Some of the syntaxes are changed.

Thank you,

Santhosh Tirunahari

Similar Posts:

• How to optimize PHP code (tips)
• ORACLE Application Express
• Working with PHP and Excel
• Load Balancing for sharing multiple internet connections
• The Ruby Programming language
• HTTP and HTTPS with Apache server
• Introduction to RIA(Rich Internet Application) and Adobe Flex