PHP OOP Access Modifiers
🔐 PHP OOP – Access Modifiers (public, private, protected)
🔥 1. Types of Access Modifiers in PHP
| Modifier | Accessible Inside Class | Accessible Outside Class | Accessible in Child Class |
|---|---|---|---|
| public | ✔ Yes | ✔ Yes | ✔ Yes |
| private | ✔ Yes | ❌ No | ❌ No |
| protected | ✔ Yes | ❌ No | ✔ Yes |
🟩 1️⃣ public (open for all)
Anything public can be accessed from anywhere.
✔ Example:
🟥 2️⃣ private (only inside same class)
Private properties/methods cannot be accessed from outside or by child classes.
❌ Wrong (will cause error):
Access using a public method:
3️⃣ protected (inside class + child class)
Protected can be accessed from:
✔ same class
✔ inherited (child) classes
❌ NOT accessible from outside
Example:
⭐ Full Example: All 3 Modifiers Together
🔧 Why Access Modifiers Are Important?
✔ Improve security
✔ Prevent accidental changes
✔ Control how data is accessed
✔ Make code clean and professional
✔ Essential for real OOP projects
✔ Used heavily in Laravel
🎯 Summary Table (Easy to Remember)
| Modifier | Meaning |
|---|---|
| public | Anyone can access |
| private | Only inside the class |
| protected | Class + child subclass |
