Timespan Problem

[homer09001]

here the concerning code

$conv1 = strtotime($takeofftime);  

$conv2 = strtotime($landingtime);  

$timespan = ($conv2 - $conv1) / 60;

the problem being if $conv1 is set to before midnight in the form and $conv2 is set after mindight it calculates it as if its going back in time not forwards into the next day any ideas?

for example if a user enters

$conv1 as 23:00 hours
and
$conv2 as 01:00 hours

it wont work it out proply heres the output from the php file behind the form:

You Just Entered This Information

Pilot ID : V-RAF 1
Name : Daniel Hill

Takeoff Time : 23:00

Landing Time : 01:00

Your Total Flight Time : -1320 <-- theres the prob it should read 120 as in 120 minutes/2 hours not -1320 minutes as in 22 hours

Departure Airport : egnt

Arrival Airport : egkk

Aircraft : 737

Notes : None

any idea's?

[crislewis]

Instead of checking the differences between the two times only - use a full date/time value in the strtotime() function. If you don't specify a date part it will assume the date returned by now().