Solving the ‘Return the Sum of Two Numbers’ PHP Programming Problem

Writing a Method That Adds Two Integers and Returns Their Sum

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In this article, we’ll walk through a step-by-step guide on how to write a method that takes two integers as arguments and returns their sum.

Step 1: Define the Method

To start, we need to define the method. In PHP, a method is a function that is defined inside a class. We’ll create a class called Math and define a method called sumOfTwoNumbers. We’ll specify that it takes two integer arguments:

class Math {
  public static function sumOfTwoNumbers($num1, $num2) {
    // code goes here
  }
}

Step 2: Add the Integers

Next, we need to add the two integers together. We can do this using the + operator:

class Math {
  public static function sumOfTwoNumbers($num1, $num2) {
    $sum = $num1 + $num2;
    return $sum;
  }
}

Step 3: Return the Sum

Finally, we need to return the sum. In PHP, we use the return keyword to return a value from a method:

class Math {
  public static function sumOfTwoNumbers($num1, $num2) {
    $sum = $num1 + $num2;
    return $sum;
  }
}

Step 4: Test the Method

Now that we’ve written our method, let’s test it out! We can create an instance of our Math class and call the sumOfTwoNumbers method, passing in two integers to see if it returns the correct sum:

$math = new Math();

$result1 = $math->sumOfTwoNumbers(3, 2);
echo $result1; // Output: 5

$result2 = $math->sumOfTwoNumbers(-3, -6);
echo $result2; // Output: -9

$result3 = $math->sumOfTwoNumbers(7, 3);
echo $result3; // Output: 10

And that’s it! We’ve successfully solved the “Return the Sum of Two Numbers” PHP programming problem. By following these simple steps, you can write a method that adds two integers and returns their sum. Happy coding!

If you find this algorithm helpful, check out my other PHP algorithm solution article below:

Learn How to Write a PHP Function to Compute Combinations from Multiple Groups