if number is a negative number, add 24

[flemingmike]

hello,  i have a start time and an end time (no dates).  the following works great, except for when the start time is at night, and the end time is in the morning.  im thinking if i can do an if the number is negative, add 24, that it will resolve my issue.

 

any ideas?

 

$tbilled = $tfinish - $tstart;

[coupe-r]

if($tbilled < 0)

{

    $tbilled = $tbilled + 24;

}

 

?????

[flemingmike]

perfect.  one other thing i just noticed.  when it does the subtraction, it is only subtracting the hour, not the minutes.  here is what i have, any ideas?

 

the format for my time is 00:00:00

 

$tbilled = $tfinish - $tstart - $tlunch;
  
  if($tbilled < 0)
{
    $tbilled1 = $tbilled + 24;
} else {
    $tbilled1=$tbilled;
  }