🧲 PHP OOP – Static Properties

✔ Shared by all objects
✔ Accessed using ClassName::$property
✔ Declared with static keyword

🟦 1️⃣ Basic Static Property Example

You don’t need to create an object.

🟩 2️⃣ Access Static Property Inside Class

Use self::$property inside the same class.

🟧 3️⃣ Modify Static Property

🟥 4️⃣ All Objects Share Same Static Property

All objects update one shared variable.

🟨 5️⃣ Static Property with Inheritance

Child class inherits static properties.

🟫 6️⃣ Override Static Property in Child

Each class keeps its own version.

🟪 7️⃣ Late Static Binding with Static Properties

Use static::$property for overriding behavior.

🟦 8️⃣ Wrong: Cannot Use $this with Static Property

Because $this refers to an object, not the class.

🟩 9️⃣ Practical Use Case – Configuration

🟧 🔟 Practical Use Case – Auto Incrementing ID

🎯 Summary (Easy to Remember)