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What is the difference between PHP4 and PHP5?



  Joseph Ranjan wrote ...
There are several differences between PHP4 and PHP5.

1.Exception introduced.
2.New error level named E_STRICT has been introduced.
3.we can use the final keyword to indicate that a method
cannot be overridden by a child
4.
public, private and proted method introduced
5.
Magic methods included
6.
we can pass value by reference


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