PHP Exercises: Compute the sum of the digits of a number

PHP: Exercise-45 with Solution

Write a PHP program to compute the sum of the digits of a number.

Sample Solution:

PHP Code:

// Define a function to calculate the sum of digits in a given number
function sum_of_digits($nums) {
    // Initialize a variable to store the sum of digits
    $digits_sum = 0;

    // Iterate through each digit in the number
    for ($i = 0; $i < strlen($nums); $i++) {
        // Add the current digit to the sum
        $digits_sum += $nums[$i];

    // Return the sum of digits
    return $digits_sum;

// Test the function with example numbers
echo sum_of_digits("12345")."\n";
echo sum_of_digits("9999")."\n";


Sample Output:



Flowchart: Swap two variables

PHP Code Editor:

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