[pcroarkin]

I am looking for suggestions on the best way to calculate the number of seconds between two dates and times. Any suggestions? Seems like strtotime() would do the trick but wondering if anyone has any other preferred methods.

[dx4]

If you want to do it yourself, it's simple math. Subtrack the seconds, the minutes, the hours.... given and then multiply the minutes with 60, hours with 3600 and so on.

[Leder678]

http://php.net/manual/en/function.strtotime.php

[grace1004]

You can calculate it with mktime() function, which converts datetime into unix timestamp (expressed as seconds).
The following is an example:

PHP Code:

<?php
//$time = mktime($hour, $minute, $second, $month, $day, $year);

$time = mktime(13, 30, 50, 6, 2, 2012); 
$time_2 = mktime(15, 27, 40, 6, 4, 2012);

$diff = $time_2 - $time;

echo $diff;
?>