Course Details

Elevo Labs
Full-Stack Web Development

PHP OOP: Object-Oriented Programming for Modern PHP Development

Amit Chandrakar

Instructor: Amit Chandrakar

Created: 16 June, 2025
Updated: 16 June, 2025

Course Description

Elevate your PHP development skills by mastering Object-Oriented Programming (OOP). This comprehensive course is designed for developers who have a solid grasp of PHP fundamentals and are ready to transition to writing more structured, maintainable, and scalable code using OOP principles.

You will begin by understanding the core concepts of OOP: classes, objects, properties, and methods, along with the crucial `$this` keyword, constructors, and destructors. We then delve deep into the four pillars of OOP: Encapsulation, Inheritance, Polymorphism, and Abstraction, learning how to apply them effectively using access modifiers, abstract classes, and interfaces.

The curriculum extends to advanced OOP features unique to PHP, such as traits for code reuse, static members, class constants, and powerful magic methods that allow you to customize object behavior. You'll learn how to organize your code with namespaces and implement robust exception handling in an OOP context. Finally, we'll introduce SOLID Principles, Dependency Injection, Composition, and common OOP design patterns, providing you with architectural blueprints for building robust applications.

What You'll Learn:

  • Core OOP concepts: Classes, Objects, Properties, Methods, Constructors, and Destructors.
  • Encapsulation: Implementing `public`, `private`, `protected` access modifiers, and using getters/setters.
  • Inheritance: Using `extends`, `parent` keyword, and Method Overriding; understanding `final` classes/methods.
  • Polymorphism: Understanding the concept, and achieving it with Abstract Classes and Interfaces (including multiple interface implementation).
  • Abstraction: Hiding complexity with abstract classes and interfaces.
  • Static Properties/Methods and Class Constants (`self` vs. `static`).
  • Traits for flexible code reuse.
  • Namespaces for code organization and Autoloading (`spl_autoload_register()`).
  • Magic Methods: `__get`, `__set`, `__call`, `__callStatic`, `__toString`, `__invoke`, `__isset`, `__unset`, `__clone`, `__debugInfo`, `__sleep`, `__wakeup`.
  • Advanced Exception Handling in an OOP context.
  • Dependency Injection (DI): Principles and practical implementation.
  • Design Patterns: Common OOP solutions (Singleton, Factory, Strategy, Observer, etc.).
  • SOLID Principles: Best practices for writing maintainable OOP code.
  • Composition vs. Inheritance: Understanding their differences and when to use each.
  • Type Hinting & Return Types: Enforcing data integrity.
  • Late Static Binding: Understanding dynamic static method calls.
  • Reflection API: Inspecting code at runtime.
  • Object Cloning: Deep vs. Shallow copies.
  • Writing clean, modular, and scalable PHP code following modern OOP practices.

Who Is This Course For?

This course is for PHP developers who have a solid understanding of PHP fundamentals (e.g., from 'PHP & MySQL Fundamentals' course or equivalent procedural PHP experience) and are looking to transition to or deepen their knowledge of Object-Oriented Programming. It's essential for anyone aiming to work with modern PHP frameworks like Laravel or Symfony, or build larger, more maintainable applications.

Prerequisites:

  • Solid PHP Fundamentals: A strong understanding of PHP syntax, variables, data types, control structures, functions, and arrays is essential.
  • Basic Understanding of Web Concepts: Familiarity with HTTP, forms, and client-server interaction (as covered in a fundamentals course).
  • A Local PHP Development Environment: Such as XAMPP, MAMP, or Laragon.
  • A Computer/Laptop: For coding practice.
  • Willingness to Learn: Enthusiasm for mastering advanced programming concepts.

Includes practical coding challenges for each principle, mini-projects applying OOP concepts, and a final capstone project. Certificate of completion available. Available in English and Hindi.

1. Why Object-Oriented Programming? (Procedural vs. OOP Benefits)
20min
2. Core Concepts: Classes, Objects, Properties, and Methods
30min
3. Defining Classes and Creating Objects
25min
4. The `$this` Keyword: Referring to the Current Object
20min
5. Constructors (`__construct()`): Initializing Objects
25min
6. Destructors (`__destruct()`): Cleaning Up Objects
15min
7. Recap & Practical Task: Create Your First PHP Class and Object
40min

8. Understanding Encapsulation: Bundling Data and Behavior
25min
9. Access Modifiers: `public`, `private`, `protected`
30min
10. Implementing Encapsulation with Getters and Setters (Accessor Methods)
35min
11. Property Visibility and Best Practices
20min
12. Recap & Practical Task: Encapsulate a User Class
45min

13. What is Inheritance? Extending Classes with `extends`
25min
14. Parent and Child Classes (Subclasses and Superclasses)
30min
15. Method Overriding: Customizing Parent Methods
25min
16. The `parent` Keyword: Accessing Parent Class Members
20min
17. The `final` Keyword for Classes and Methods (Preventing Overriding)
20min
18. Recap & Practical Task: Build a Simple Animal Class Hierarchy
50min

19. Understanding Polymorphism: Many Forms, One Interface
25min
20. Abstract Classes and Abstract Methods: Defining Contracts
35min
21. Interfaces: Defining Behavior Blueprints
30min
22. Implementing Multiple Interfaces
20min
23. Type Hinting & Return Types for Robustness
25min
24. Recap & Practical Task: Implement Payment Gateways using Polymorphism and Interfaces
1hr

25. Static Properties and Methods: Class-Level Members
25min
26. Class Constants: Defining Fixed Values within a Class
20min
27. The `self` Keyword vs. `static` Keyword (Late Static Binding)
25min
28. Introduction to Autoloading: Solving File Inclusion Problems
20min
29. Implementing Autoloading with `spl_autoload_register()`
30min
30. Recap & Practical Task: Create a Utility Class with Static Methods and Autoloading
50min

31. What are Traits? Overcoming PHP's Single Inheritance Limitation
25min
32. Defining and Using Traits in Classes
30min
33. Conflict Resolution with Traits (`insteadof`, `as`)
35min
34. Using Multiple Traits in a Single Class
20min
35. Traits within Traits
15min
36. Recap & Practical Task: Refactor Common Functionality into Traits
45min

37. Introduction to Magic Methods: How They Work
20min
38. Property Overloading: `__get()`, `__set()`, `__isset()`, `__unset()`
35min
39. Method Overloading: `__call()`, `__callStatic()`
30min
40. Object Serialization: `__sleep()`, `__wakeup()`
25min
41. Object Conversion: `__toString()`, `__invoke()`
20min
42. Cloning Objects: `__clone()`
15min
43. Debugging Objects: `__debugInfo()`
15min
44. Recap & Practical Task: Create a Dynamic Configuration Object using Magic Methods
50min

45. Namespaces: Organizing Code and Preventing Name Collisions
25min
46. Declaring and Using Namespaces (`namespace`, `use`)
30min
47. Global Space and Importing Aliases
20min
48. Custom Exceptions in OOP: Creating Your Own Exception Classes
30min
49. Throwing and Catching Custom Exception Objects
25min
50. Finally Block and Nested Try/Catch
20min
51. Recap & Practical Task: Implement Namespaced Classes with Custom Exception Handling
50min

52. SOLID Principles: An Overview for Robust Design
30min
53. Single Responsibility Principle (SRP)
20min
54. Open/Closed Principle (OCP)
20min
55. Liskov Substitution Principle (LSP)
20min
56. Interface Segregation Principle (ISP)
20min
57. Dependency Inversion Principle (DIP)
20min
58. Dependency Injection (DI): Concepts and Implementation
35min
59. Composition vs. Inheritance: When to Use Which
30min
60. Introduction to Common OOP Design Patterns
25min
61. Creational Patterns: Singleton Pattern
30min
62. Creational Patterns: Factory Pattern
25min
63. Structural Patterns: Adapter Pattern (Conceptual)
20min
64. Behavioral Patterns: Observer Pattern (Pub/Sub)
30min
65. Recap & Practical Task: Refactor a Small Project with SOLID Principles and DI
1hr 15min

66. Project Overview: Planning an OOP-Based Application (e.g., Simple Blog/CMS)
1hr
67. Designing the Class Structure and Relationships
1hr 30min
68. Implementing Core Features with Encapsulation and Inheritance
2hr
69. Applying Interfaces and Abstract Classes for Flexibility
1hr 30min
70. Integrating Namespaces, Autoloading, and Custom Exceptions
1hr
71. Final Code Review and Best Practices for OOP in PHP
45min
72. Recap & Course Conclusion
40min

Instructor

Amit Chandrakar
Amit Chandrakar

Senior Full Stack Developer & Instructor

11 Courses

View Details
Elevo Labs

Courses Includes:

  • Price : ₹2500
  • Instructor : Michael Lee
  • Durations : 2 Weeks
  • Modules : 10
  • Language : English, Hindi
  • Level : Intermediate, Expert
  • Certifications : Yes
  • Get Curriculum: Download

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