如何计算时差

Question

$to = strtotime("2008-12-13 10:42:00");
$from = strtotime("2008-12-13 10:21:00");
echo round(abs($to_time - $from_time) / 60,2). " minute";
echo round(abs($to_time - $from_time) / 3600,2). " hours";

It is working good when I convert into minutes, but when converting into hours it's not giving the correct output.

Answer 1

Try This Source : http://php.net/manual/en/datetime.diff.php

<?php
$datetime1 = new DateTime('2008-12-13 10:42:00');
$datetime2 = new DateTime('2008-12-13 10:21:00');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%h hour');
echo $interval->format('%R%i minute');
?>

Use appropriate format from here http://php.net/manual/en/dateinterval.format.php