What are class and objects in PHP?

As a registered tutor on UrbanPro.com specializing in PHP training, I'm delighted to provide you with a comprehensive explanation of class and objects in PHP. This fundamental concept is crucial for anyone aspiring to master PHP development.

1. Introduction to PHP Training

Before delving into the specifics of classes and objects, let's briefly understand the context within the realm of PHP training. PHP (Hypertext Preprocessor) is a widely-used scripting language for web development. Proficiency in PHP is a valuable skill for anyone aiming to build dynamic websites and web applications.

2. Core Concept: Classes in PHP

In PHP, a class is a blueprint or a template for creating objects. It encapsulates data and behavior, providing a structured way to organize code. Here are key points regarding classes in PHP:

• Definition: A class is defined using the class keyword followed by the class name.

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• class MyClass { // properties and methods go here }

• Properties: These are variables within a class, storing data specific to the class.

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• class Person { public $name; public $age; }

• Methods: Functions within a class are called methods, defining the behavior of the class.

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• class Car { public function startEngine() { // code to start the engine } }

3. Objects in PHP

Objects are instances of classes, created based on the class blueprint. They represent real-world entities and allow the execution of class methods. Here's an overview of objects in PHP:

• Object Creation: To create an object, the new keyword is used.

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• $person1 = new Person();

• Accessing Properties and Methods: Object properties and methods are accessed using the arrow (->) operator.

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• $person1->name = "John"; $person1->age = 25;

• Multiple Objects: Multiple objects can be created from the same class, each maintaining its own state.

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