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:
<?php
function sum_of_digits($nums) {
$digits_sum = 0;
for ($i = 0; $i < strlen($nums); $i++) {
$digits_sum += $nums[$i];
}
return $digits_sum;
}
echo sum_of_digits("12345")."\n";
echo sum_of_digits("9999")."\n";
?>
Sample Output:
15 36
Flowchart:

PHP Code Editor:
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous: Write a PHP program to print out the sum of pairs of numbers of a given sorted array of positive integers which is equal to a given number.
Next: Write a PHP program to find heights of the top three building in descending order from eight given buildings
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
PHP: Tips of the Day
Returns all elements in an array except for the first one
Example:
<?php function tips_tail($items) { return count($items) > 1 ? array_slice($items, 1) : $items; } print_r(tips_tail([1, 5, 7])); ?>
Output:
Array ( [0] => 5 [1] => 7 )
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises