Total digits of integer value

Write a program to find the total digits of a integer value without converting them into string

int a = 3421111

output: 7

 

  1. <?php
  2.  
  3. function total_digit_of_integer($int_val) {
  4.     $go_running = true;
  5.     $no_of_digits = 0;
  6.     $nines = 0;
  7.     //make integer to positive
  8.     if ($int_val < 0) {
  9.         $int_val = -($int_val);
  10.     }
  11.     while ($go_running == TRUE) {
  12.         $nines = (int) ($nines );
  13.         if ($int_val > $nines || $int_val == 0) {
  14.             $int_val = ($int_val == 0) ? 1 : $int_val;
  15.             $no_of_digits++;
  16.             $nines = $nines . '9';
  17.         } else {
  18.             $go_running = FALSE;
  19.         }
  20.     }
  21.     return $no_of_digits;
  22. }
  23.  
  24. echo total_digit_of_integer(-10);
  25. ?>

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