How do suptract 33 hours - 30 min in PHP [duplicate] - php

Question

This question already has answers here:
Calculate difference (in hours) between two times in PHP
(2 answers)
Closed 4 months ago.
My Code is :
$hm = strtotime('33:00:00')-strtotime('00:30:00');
$hms = gmdate("H:i:s", $hm);
i need the output is 32:30:00

Answer 1

Use this code to get subtracted values.
$time1 = '33:00:00';
$time2 = '00:00:00';
echo 'Subtract = '.subtractTwoTimes($time1, $time2);
function subtractTwoTimes($time1, $time2){
$time1_parts = explode(':', $time1);
$time1_hours = $time1_parts[0];
$time1_mins = $time1_parts[1];
$time1_secs = $time1_parts[2];
$time2_parts = explode(':', $time2);
$time2_hours = $time2_parts[0];
$time2_mins = $time2_parts[1];
$time2_secs = $time2_parts[2];
$total_hours = $time1_hours - $time2_hours;
$total_mins = $time1_mins - $time2_mins;
$total_secs = $time1_secs - $time2_secs;
if($total_secs < 0){
$total_secs += 60;
$total_mins--;
}
if($total_mins < 0){
$total_mins += 60;
$total_hours --;
}
return $total_hours.':'.$total_mins.':'.$total_secs;
}

Answer 2

To get added or subtracted value from same function.
This is an edited answer. I optimized the code to make it work for you in one function.
$time1 = '33:00:00';
$time2 = '00:30:00';
echo 'Add = '. addOrSubtractTwoTimes($time1, $time2, 'add');
echo '<br>';
echo 'Subtract = '. addOrSubtractTwoTimes($time1, $time2, 'subtract');
function addOrSubtractTwoTimes($time1, $time2, $operation){
$time1_parts = explode(':', $time1);
$time1_hours = $time1_parts[0];
$time1_mins = $time1_parts[1];
$time1_secs = $time1_parts[2];
$time2_parts = explode(':', $time2);
$time2_hours = $time2_parts[0];
$time2_mins = $time2_parts[1];
$time2_secs = $time2_parts[2];
switch ($operation){
case 'add':
$total_hours = $time1_hours + $time2_hours;
$total_mins = $time1_mins + $time2_mins;
$total_secs = $time1_secs + $time2_secs;
if($total_secs > 59){
$extra_mins = floor($total_secs/60);
$total_secs = $total_secs%60;
$total_mins += $extra_mins;
}
if($total_mins > 59){
$extra_hours = floor($total_mins/60);
$total_mins = $total_mins%60;
$total_hours += $extra_hours;
}
break;
case 'subtract':
$total_hours = $time1_hours - $time2_hours;
$total_mins = $time1_mins - $time2_mins;
$total_secs = $time1_secs - $time2_secs;
if($total_secs < 0){
$total_secs += 60;
$total_mins--;
}
if($total_mins < 0){
$total_mins += 60;
$total_hours --;
}
break;
}
return sprintf('%02d', $total_hours).':'.sprintf('%02d', $total_mins).':'.sprintf('%02d', $total_secs);
}