Category: Oriented PHP

The release of version 7.0 is an important milestone in the evolution of PHP language, when a lot of new features were introduced. The feature of Anonymous class was also made available in PHP version 7.0. As the term “anonymous” suggests, it is a class without a (programmer declared) name. The usual practice is to…

A PHP statement such as “$obj1 = $obj2” merely creates another reference to the same object in memory. Hence, changes in attribute reflect both in original and duplicate object. The clone keyword in PHP creates a shallow copy of an object. $obj2=$obj1 Changes in the original object do not reflect in the shallow copy. Cloning Types There…

In C++ or Java, the term means a class can a class method of same name more than once but with different arguments and/or return type. In PHP, the term overloading has a different interpretation. It is a feature with which properties and methods can be created dynamically. PHP’s magic methods (method names starting with…

In PHP, the final keyword prevents classes and functions from being changed or overridden. It helps to keep important parts of your code secure, to guarantee no one accidentally breaks them while making changes. The “final” keyword is used in the definition of a class, a method inside a class, as well as with the definition of…

PHP implements encapsulation, one of the important principles of OOP with access control keywords: public, private and protected. Encapsulation refers to the mechanism of keeping the data members or properties of an object away from the reach of the environment outside the class, allowing controlled access only through the methods or functions available in the class. Principle of Encapsulation…

When working with objects in PHP, you may want to go over each property one by one. This is referred to as object iteration. It is useful when you want to verify or display all of an object’s properties without having to access them individually. A foreach loop may be employed to iterate through all the publicly…

We often organize the files in different folders. Usually a folder contains files related to a certain objective, or application or category. A folder can’t contain two files with the same name, though different folders may have a file of the same name so that the path of each file is different. The idea of…

The “static” keyword in PHP is used to define static properties and static methods in a PHP class. It may be noted that the static keyword is also used to define static variable, and static anonymous functions. Read this chapter to learn about the static properties in a PHP class. In a class definition, a…

The “static” keyword in PHP is used to define static properties and static methods in a PHP class. It may be noted that the static keyword is also used to define static variable, and static anonymous functions. This chapter discusses static methods in a PHP class. Create a Static Method in PHP In a class…

When designing websites with PHP, you might want to share the same functionality among different classes. However, PHP does not support multiple inheritance. A class can only inherit from one parent class. So, how do you reuse code between classes? In PHP, Traits have been introduced to overcome this limitation. You can define one or…