Core PHP Practice Task List

📌 Introduction

This task list is designed to strengthen your understanding of core PHP concepts, including variables, loops, arrays, functions, and JSON handling. By working through these tasks, you will build a strong foundation in PHP programming, preparing you for more advanced topics such as database integration and front-end development.

⚠ Important: Avoid copying code—focus on understanding the logic and principles behind each solution.

🗂 Sample Data (JSON Format)

The following JSON dataset represents a list of users and their purchases in an online store:

{
    "users": [
        {
            "id": 1,
            "name": "John Doe",
            "email": "john.doe@example.com",
            "purchases": [
                { "item": "Laptop", "price": 999.99 },
                { "item": "Mouse", "price": 19.99 },
                { "item": "Keyboard", "price": 49.99 }
            ]
        },
        {
            "id": 2,
            "name": "Jane Smith",
            "email": "jane.smith@example.com",
            "purchases": [
                { "item": "Phone", "price": 799.99 },
                { "item": "Charger", "price": 29.99 }
            ]
        },
        {
            "id": 3,
            "name": "Bob Johnson",
            "email": "bob.johnson@example.com",
            "purchases": []
        }
    ]
}

📝 Task List

✅ Task 1: Parse and Display User Data

Function: getUserData($jsonData)
Expected Output:

Name: John Doe, Email: john.doe@example.com  
Name: Jane Smith, Email: jane.smith@example.com  
Name: Bob Johnson, Email: bob.johnson@example.com

✅ Task 2: Calculate Total Number of Purchases

Function: countPurchases($jsonData)
Expected Output:

Total Purchases: 5

✅ Task 3: Calculate Total Amount Spent by a User

Function: getUserTotalSpent($jsonData, $userId)
Expected Output for User 1:

Total Spent by User 1: 1069.97

✅ Task 4: Find the User with the Highest Spending

Function: findTopSpender($jsonData)
Expected Output:

Top Spender: John Doe with Amount: 1069.97

✅ Task 5: List Users with No Purchases

Function: findUsersWithNoPurchases($jsonData)
Expected Output:

Users with no purchases: Bob Johnson

✅ Task 6: Sort Users by Total Spending

Function: sortUsersBySpending($jsonData)
Expected Output:

John Doe spent 1069.97  
Jane Smith spent 829.98  
Bob Johnson spent 0

✅ Task 7: Add New User and Purchase

Function: addUserAndPurchase($jsonData, $userName, $email, $item, $price)
Example Usage:

$newJsonData = addUserAndPurchase($jsonData, "Alice Brown", "alice.brown@example.com", "Headphones", 149.99);
echo $newJsonData;

Expected JSON Output (Partial):

{
    "id": 4,
    "name": "Alice Brown",
    "email": "alice.brown@example.com",
    "purchases": [
        { "item": "Headphones", "price": 149.99 }
    ]
}

🏆 Conclusion

By completing these tasks, you will:
✅ Strengthen your understanding of PHP fundamentals
✅ Learn how to work with JSON data structures
✅ Improve your problem-solving skills in real-world scenarios

Mastering these will prepare you for database integration (MySQL) and full-stack development! Keep practicing, and happy coding! 🚀

👨‍💻 Author

Osama Ayub

osamaayub/php-practice-tasks