PHP OOP - Object-oriented Programming in PHP

This PHP OOP series helps you master Object-oriented Programming in PHP.

PHP introduced object-oriented programming features since version 5.0. Object-Oriented programming is one of the most popular programming paradigms based on the concept of objects and classes.

PHP OOP allows you to structure a complex application into a simpler and more maintainable structure.

Section 1. Objects & Classes

Objects & Classes – learn the basic concepts of OOP including objects and classes.
The $this keyword – help you understand PHP $this keyword and how to use it effectively.
Access Modifiers: public vs. private – explain to you the access modifiers in PHP and help you understand the differences between the private and public access modifiers.

Section 2. Constructor and Destructor

Constructor – explain to you the constructor concept and how to use it to initialize attributes.
Destructor – learn how to use destructor to clean resources when the object is deleted.

Section 3. Properties

Typed Properties – show you how to add type hints to class properties.
Readonly Properties – use the readonly keyword to define readonly properties that can be initialized once within the class.

Section 4. Inheritance

Inheritance – how to extend a class for code reuse.
Call the parent constructor – show you how to call the parent constructor from a child class’s constructor.
Overriding method – guide you on how to override a parent class’s method in the child class.
Protected Access Modifier – explain the protected access modifier and how to use protected properties and methods effectively.

Section 5. Abstract classes

Abstract Class – guide you on abstract classes and how to use them effectively.

Section 6. Interfaces

Interface – explain to you the interface concept and how to create interfaces.

Section 7. Polymorphism

Polymorphism – explain the polymorphism concept and show you how to implement polymorphism in PHP using abstract classes or interfaces.

Section 8. Traits

Traits – introduce you to traits.

Section 9. Static methods & properties

Static Methods and Properties – show you how to use static methods and properties.
Class constants – learn how to define class constants using the const keyword.
Late Static Binding – introduce the late static binding concept and how to use it effectively.

Section 10. Magic Methods

Magic methods – understand how the magic methods work in PHP.
__toString() – return the string representation of an object.
__call() – show you how to use the __call() magic method.
__callStatic() – show you how to use the __calStatic() magic method.
__invoke() – learn how to define a function object or function by implementing the __invoke() magic method.

Section 11. Working with Objects

Serialize Objects– use the serialize() function to serialize an object into a binary string and how to use the __serialize() and __sleep() magic methods
Unserialize Objects – guide you on how to use the unserialize() function to convert a serialized string into an object. Also, discuss the __wakeup() and __unserialize() magic methods.
Cloning Objects – show you how to copy an object.
Comparing Objects – how to compare two objects.
Anonymous class – learn how to define a class without a declared name.

Section 12. Namespaces

Namespace – learn how to use namespaces to group the related classes.

Section 13. Autoloading

Autoloading Class files – learn how to load classes automatically.
Autoloading using Composer – show you how to use Composer to autoload classes.

Section 14. Exception Handling

try…catch – show you how to use the try…catch statement to handle exceptions that may occur in your script.
try…catch…finally – learn how to clean up the resources when an error occurs using the finally block.
Throw an exception – guide you on how to throw an exception using the throw statement.
Set an Exception Handler – show you how to use the set_exception_handler function to set a global exception handler to catch the uncaught exceptions.

Section 15. Class / Object Functions

class_exists – return true if a class exists
method_exists – return true if an object or a class has a specific method.
property_exists – return true if an object or a class has a specific property.

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