PHP从总时间的X百分比中获取时间

Question

I don't know if this will make sense but I would like to get the time from percentage of a value, I have the following as an input example:

mypercentage = 50; 
mytime = "00:59:59"

As you can see, my time is 60 minutes (1 hour) and 50% of that is 30 minutes therefore from the 2 above inputs I would like to get the following output (50 % of an hour):

00:30:00

Answer 1

1. Explode the string into an array

2. Convert the 3 elements into numbers

3. Find the value in seconds. $array[0]*3600+$array[1]*60+$array[2]

4. Calculate the time from the value in step 3 and the percentage.

5. Use /3600 and /60 to find the hour and minutes and %60 to find the seconds.

6. put the values in an array and implode to a string, or just use

   $hour.":".$minute.":".$second

Answer 2

Thank you all who responded, I found this solution to work:

            $mypercentage = 50;
            $mytime = '00:59:59';

            $totaltime = date('H:i:s', strtotime($mytime));

            $seconds = strtotime("1970-01-01 $totaltime UTC");

            $per_seconds = ($mypercentage / 100) * $seconds;

            $time_from_percentage = gmdate("H:i:s", $per_seconds);
            echo $time_from_percentage;