Find time difference in minutes with php or mysql -

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i have 2 data inputs can enter start time , finish time.

for example

start_time 13:00  finish_time 14:40

the entry format of hh:mm.

i'd find time difference, in case 100 minutes.

what best way it?

you use diff within datetime.

#!/usr/bin/env php  <?php  $datetime1 = new datetime('13:00'); $datetime2 = new datetime('14:40');  $interval = $datetime1->diff($datetime2);  $hours   = $interval->format('%h'); $minutes = $interval->format('%i');  echo $hours * 60 + $minutes;  ?>

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