🔰 INTERVIEW TASK: Mini Bus Booking System (PHP OOP)

📌 Objective

This task is designed to evaluate your practical understanding of PHP Object-Oriented Programming, array manipulation, and data querying logic. You will work with pre-defined classes and data, simulating a bus booking system without using a database.

---

🧾 Context

You are given a simplified bus booking system. The system consists of:

• A list of buses, each having an ID, name, and total number of seats.
• A list of bookings, where each booking is linked to a bus and contains passenger information and travel date.

This simulation is implemented using basic PHP classes and dummy data stored in arrays. Your task is to interact with this data, perform queries, and manipulate the data structure using object-oriented principles.

---

📁 Files Provided

You will receive or create the following files:

• Bus.php – Contains the Bus class definition.
• Booking.php – Contains the Booking class definition.
• index.php – Contains the dummy data and where all task implementations will be written.

---

🛠️ Tasks to Complete

Implement the solutions inside index.php. Comment your code clearly and ensure outputs are readable.

✅ Task 1 – Display All Buses

Loop through the list of all buses and print the following for each:

• Bus ID
• Bus Name
• Total number of seats

✅ Task 2 – Display All Bookings

Loop through the bookings list and display:

• Booking ID
• Passenger Name
• Bus Name (not just Bus ID)
• Date of travel

Hint: You will need to match the bus ID in each booking to a corresponding bus to get the name.

✅ Task 3 – Display All Bookings on a Specific Date

Write code to filter and display all bookings made for 2025-05-01 only.

Display:

• Booking ID
• Passenger Name
• Bus Name

✅ Task 4 – Count Number of Bookings Per Bus

For each bus in the system, count and display how many times it has been booked.

Display:

• Bus Name
• Total number of bookings for that bus

✅ Task 5 – Add a New Booking

Write a function called addBooking() that accepts the following parameters:

• bookingId
• busId
• passengerName
• date

This function should:

• Create a new Booking object
• Add it to the $bookings array
• After adding, display all bookings again to confirm the update

---

✅ Evaluation Criteria

Criteria	Details
✅ Code Organization	Use of OOP, proper use of classes and properties
✅ Array Manipulation	Filtering, searching, and aggregating array data
✅ Logic Clarity	Does the solution make logical sense and handle data correctly?
✅ Reusability	Use of functions or utility methods when appropriate
✅ Code Readability	Proper comments, indentation, and variable naming

---

🧠 Bonus (Optional)

If time permits, consider writing an additional function that checks:

• Available seats on a bus for a specific date
• Output: Bus Name - Booked: X / Available: (Total - X)

---

⏰ Time Allocation

Time: 30–45 minutes

---