Difference in Time

miles_rich

I need to work out the difference between two dates, and times eg

01-11-2003 13:00:00
02-11-2003 13:00:00

Now we all know that this is 24 hours apart, but how can i get the computer to work out the difference between any given dates and times and output the answer in the format

24 hours difference.

andymoo

i'd start by converting both dates to unix timestamps and doing a simple calculation between the two

hth

miles_rich

That isnt a problem but then how do i output how many hours difference it is?? from a timestamp?

andymoo

1 minute = 60 seconds
1 hour = 60 x 60 seconds
1 day = 60 x 60 x 24

This is what I use to delete files which are over four hours old, it might help.

<?php
$now = time();
$fourhours = 60 60 4;
$toolate = $now - $fourhours;
$timefilecreated = filemtime($filename);
$difference = $now - $timefilecreated;

if($difference<$fourhours){
echo "Leave it be, it's too young";
}else{
echo "Delete file, it's too old";
unlink ($filename);
}
?>

miles_rich

I already use something like that but it gives me an error if i gover over 24hours

Here is mu code:

$start_time = "12:00:00";
$start_date = "06/10/2003";

$end_time = "13:00:00";
$end_date = "07/10/2003";

$explode_start_time = explode(":",$start_time);
$explode_start_date = explode("-",$start_date);
$stamp_start_time = mktime($explode_start_time[0],$explode_start_time[1],$explode_start_time[2],$explode_start_date[1],$explode_start_date[0],$explode_start_date[2]);

$explode_end_time = explode(":",$end_time);
$explode_end_date = explode("-",$end_date);
$stamp_end_time = mktime($explode_end_time[0],$explode_end_time[1],$explode_end_time[2],$explode_end_date[1],$explode_end_date[0],$explode_end_date[2]);

$stamp_dif = "";
$stamp_dif = $stamp_end_time-$stamp_start_time;
echo  $stamp_dif."<br />";



	//$total_hours = date("H:i:s",$stamp_dif);

	$total_hours = $stamp_dif/3600

this gives me 8762 ?!?!?!