Data Protection in PHP

The reason to use classes is that they provide data protection; that is, classes prevent a programmer from making logic errors in dealing with complex data structures.

A Shopping Cart Class

First, we need to define the properties and behavior of a shopping cartclass. This shopping cart will be kept fairly simple for demonstration purposes,but will certainly be sufficient for use and expansion.

Creating a bank_account Class

To demonstrate the use of a class, let's create one to model a bank account.

How many visitors browsing the site at the moment?

In this tutorial will show you how to make a class that will show how many users browsing the site at the moment. First, how work this class and its function. For his realization normally need a Apache…

Class.php Constants

Class constants work in the same way as regular constants, except they are scopedwithin a class. Class constants are public, and accessible from all scopes; for example,the following script will output…