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Learn Object Oriented Programming PHP fundamentals bootcamp | Lecture-8


How to Benefit from Understanding Public, Private, and Protected Scopes in PHP Object-Oriented Programming

If you're interested in learning Object-Oriented Programming (OOP) in PHP, it's essential to understand the differences between public, private, and protected scopes. In this Udemy course lecture, you'll learn how to use these different scopes and what benefits they can provide in your PHP coding projects.

Understanding Public, Private, and Protected Scopes in PHP

In PHP, there are three different scopes for properties and methods in classes: public, private, and protected.

  • Public Scope: Public scope is the default scope in PHP. Public properties and methods can be accessed from anywhere in the application, including outside the class. Public properties and methods are commonly used for functionality that is needed across multiple classes.
  • Private Scope: Private scope limits access to properties and methods to within the class itself. Private properties and methods cannot be accessed from outside the class, not even from any class that extends it. Private properties and methods are commonly used for sensitive data that should not be accessible from outside the class.
  • Protected Scope: Protected scope allows access to properties and methods from within the class and any class that extends it. Protected properties and methods cannot be accessed from outside the class or any class that does not extend it. Protected properties and methods are commonly used for functionality that is needed by subclasses.

Here are some of the benefits of understanding public, private, and protected scopes in PHP:

  • Better control over code accessibility: With public, private, and protected scopes, you can control which parts of your code are accessible to other classes and which ones are not. This provides a level of security and prevents unwanted changes or access to critical code.
  • Flexibility in code reuse: By using protected and public scopes, you can create classes and methods that can be extended and reused by other classes. This can help you write more efficient and maintainable code, and it can also save you time in future projects.
  • Improved debugging: When you understand how PHP's public, private, and protected scopes work, you can more easily debug issues related to code access and visibility. You can quickly identify where errors are occurring and determine which scopes may need to be adjusted.
  • More efficient code: By using the appropriate scope for your properties and methods, you can make your code more efficient and easier to read. This can make it easier for other developers to understand and work with your code, and it can also make it easier to maintain and update your code in the future.
In this lecture, you'll learn how to use public, private, and protected scopes in PHP, and you'll also learn how to extend classes to take advantage of protected and public properties and methods. You'll see examples of how to use these scopes, including how to restrict access to private information, how to access private information publicly, and how to use protected properties and methods within extended classes.

By the end of this lecture, you'll have a deeper understanding of how PHP's public, private, and protected scopes work and how you can use them to write more secure, efficient, and maintainable code. Whether you're new to PHP or an experienced developer, this lecture will provide valuable insights into OOP programming and help you become a better developer.

So, if you want to improve your PHP coding skills, enroll in this Udemy course and start learning about public, private, and protected scopes today!

Understanding the different scopes of properties and methods in classes is essential in PHP object-oriented programming. Public, private, and protected scopes provide varying levels of access to properties and methods, making it easier to control the flow of data and prevent unauthorized access to sensitive information. By using the appropriate scope for properties and methods, developers can promote efficient programming practices, reduce code duplication, and simplify the code.



  • The lesson covers the differences between public, private, and protected scopes in PHP.
  • Public scope allows access to methods and properties within the class and any instances of the object.
  • Private scope restricts access to methods and properties to only within the class.
  • The protected scope allows access to methods and properties within the parent class and any classes that extend it.
  • It's important to consider the desired level of access when choosing the scope for a method or property.

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