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

Last update on August 19 2022 21:50:29 (UTC/GMT +8 hours)

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:

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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
)