A server-side scripting language, PHP is employed in the development of web pages. In recent years, this language has become largely popular because of its simplicity. The code can be combined with HTML CODE scripts as soon as the PHP code gets executed, the web server sends out the resultant content in the form of images or HTML documents that can be interpreted easily by the browser. The importance and capacities of Thing Oriented Programming or OOP is not unknown to the PHP programmers and is a technique widely used in all modern encoding languages.
Popular OOP ideas implemented in PHP
Let us now have a look at a few of the commonly used concepts of Object Oriented Encoding that find an setup in the popular web development scripting language that is PHP.
Inheritance is one of the most crucial OOP concepts that finds used in the majority of the commonly available programming languages. It is in line with the principle of child and parent classes. PHP allows inheritance to be achieved by recognized of a class. When this is done, the child class inherits the properties of the parent class and also allows the addition of a number of properties.
Public, Personal, and guarded
Just like in any object-oriented language, PHP includes the concepts of various access modifiers, particularly Public, Private and Safeguarded.
Public- Public access allows the code to be obvious and can be modified by a program code from any place otherwise.
Private- Private access makes the code noticeable but can be modified only from within the user class.
Protected- With the guarded access modifier, the code stays noticeable but can be modified from either the same class or some kind of of the corresponding child class.
The overloading feature permits two methods to be taken with the same name but with different parameters.
Thus the accountant will have to process the salary as per the two different approaches mentioned in the code- with variable pay minus variable pay. When the salary is highly processed using variable pay, the accountant needs to mention the amount involved in the variable pay component.
Mutators and Accessors
Commonly referenced to as setters and getters, the Mutators and Accessors find wide program in all programming different languages. Getters or accessors are functions used to return or get the value of variables at the class level. Setters or mutators are functions used for setting or changing the value of any class level variable. These class types are being used for transferring data in a collective manner from one layer to another.
The use of the static keyword for methods as well as factors is one of the most frequent practices involved in object-oriented programming. Static indicates that the strategy or variable is available for each instance of the class. Static factors or methods are being used without an instance of a class being created. Within fact, static variables are not able to be accessed from your occasion of any class. Whenever a static method is being created, care should be taken to ensure that the $this variable does not get featured within a static method.
Abstract class is 1 feature of PHP-based object oriented programming that can be used very frequently. Abstract classes are those that cannot be instantiated, rather these are inherited. A class inheriting a subjective class can be itself be another abstract course. Creation of an abstract class in PHP can be done simply by use of the ‘abstract’ keyword.
As far as object-oriented programming is concerned, the interface serves as a selection of definitions of a certain pair of methods in a class. When an interface is implemented, the class is forced to follow the methods defined in the same. PHP defines user interface just as in any other language by first defining it using the “interface” keyword. For implementing, the very same keyword needs to be mentioned in the implementing class.
As much as the PHP programmers are involved, this language has emerged as one of the most popular options as an online site and web-affiliated application development language. It has undergone numerous enhancements for supporting various aspects of programming. Of all these, understanding and implementing the object-oriented features ranks as the most important.