Question

Good evening

I have a question here. i have two arrays: $duration_c[$k][$s]. it prints all ok

$duration_c[0][0]="19:30:00";
$duration_c[0][1]="00:10:00";

$duration_c[1][0]="00:30:00";
$duration_c[1][1]="00:20:00";

than to sum

$times=$duration_c[$k][$s];
function sum_the_time($times) {

  $seconds = 0;
  foreach ($times as $time)
  {
    list($hour,$minute,$second) = explode(':', $time);
    $seconds += $hour*3600;
    $seconds += $minute*60;
    $seconds += $second;
 }
  $hours = floor($seconds/3600);
  $seconds -= $hours*3600;
  $minutes  = floor($seconds/60);
  $seconds -= $minutes*60;
  // return "{$hours}:{$minutes}:{$seconds}";
  return sprintf('%02d:%02d:%02d', $hours, $minutes, $seconds);
} 
echo sum_the_time($times);

how to sum $duration_c[0][0]+$duration_c[0][1] and $duration_c[1][0]+$duration_c[1][1], and how to print?
there is error Invalid argument supplied for foreach()

Answer 1

you are sending only one value to sum_the_time function as $times=$duration_c[$k][$s];
$times has only one value you can print and check what value is going to the function by writing like this

$times=$duration_c[$k][$s];
echo $times;

use

$times=$duration_c[$k];

so that you can send array to your function and foreach will not give you error

$times=$duration_c[$k]; // contains array of times
function sum_the_time($times) {

  $seconds = 0;
  foreach ($times as $time)
  {
    list($hour,$minute,$second) = explode(':', $time);
    $seconds += $hour*3600;
    $seconds += $minute*60;
    $seconds += $second;
 }
  $hours = floor($seconds/3600);
  $seconds -= $hours*3600;
  $minutes  = floor($seconds/60);
  $seconds -= $minutes*60;
  // return "{$hours}:{$minutes}:{$seconds}";
  return sprintf('%02d:%02d:%02d', $hours, $minutes, $seconds);
} 
echo sum_the_time($times);