The difference between a constructor before PHP5 and a constructor after PHP5

Source: Internet
Author: User

In previous versions of PHP5, the constructor name must be the same as the class name, which is still available in PHP5, but is now rarely used.

PHP5 and later versions, the constructor is declared with the __construct () method, which has the advantage of making the constructor independent of the class name and not needing to change the constructor name when the class name changes.
To be backwards compatible, if there is no method named __construct () in a class, PHP will search for a construction method with the same name as the class name.


If the method of __construct () and the constructor with the same name as the class name exist at the same time, the method of __construct () is preferred.

The difference between a constructor before PHP5 and a constructor after PHP5

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