PHP Basics Coding Exercises – Practice PHP with Hands-On Code Examples

🧪 Coding Exercises

🟢 Beginner Exercises

1. ✅ Hello World

Write a PHP script that outputs "Hello, World!" using the `echo` statement.

Requirements

• - The script should output "Hello, World!" when executed.

Input

(No input is required for this task)

Expected Output

Hello, World!

📚 View Solution

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2. ✅ Simple Arithmetic

Write a PHP script that calculates the sum, difference, and product of two numbers and prints the results.

Requirements

• - Use the variables `$a` and `$b` to store numbers. - Output the sum, difference, and product of `$a` and `$b`.

Input

$a = 5;
$b = 3;

Expected Output

Sum: 8
Difference: 2
Product: 15

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3. ✅ If-Else Condition

Write a PHP script that checks if a number is positive, negative, or zero, and prints an appropriate message.

Requirements

• - Use an `if-else` statement to check if the number is positive, negative, or zero. - Output the correct message for each case.

Input

$num = -3;

Expected Output

The number is negative.

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4. ✅ String Manipulation

Write a PHP script that accepts a string and prints the following:
- The string in all uppercase.
- The string in all lowercase.
- The length of the string.

Requirements

• - Use `strtoupper()`, `strtolower()`, and `strlen()` functions.

Input

$str = "Hello PHP!";

Expected Output

Uppercase: HELLO PHP!
Lowercase: hello php!
Length: 10

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5. ✅ For Loop Example

Write a PHP script that uses a `for` loop to print numbers from 1 to 10.

Requirements

• - Use a `for` loop to iterate from 1 to 10. - Print each number in a new line.

Input

(No input is required for this task)

Expected Output

1
2
3
4
5
6
7
8
9
10

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🟡 Intermediate Exercises

1. ✅ Array Operations

Write a PHP script that creates an array of five integers, and then prints the sum and the largest number in the array.

Requirements

• - Use the `array_sum()` function to calculate the sum of the array. - Use `max()` to find the largest number.

Input

$arr = [1, 2, 3, 4, 5];

Expected Output

Sum: 15
Largest number: 5

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🔴 Advanced Exercises