PHP Check if a date range happens during another date range

Question

What I need to do is check a "task" does not occur during a lunch hour. I have 4 datetime objects. The closest code I have found is below but does not cover all possible scenarios, for example the start of the task could be halfway through lunch.

 if (($thisStart <= $lunchStart) && ($thisEnd >= $lunchStart)) {
     //happen at same time
 }

Thanks

Alex

Answer 1

if($thisStart >= $lunchStart && $thisStart <= $lunchEnd)
{
    //occurs during lunch
 } else if ($thisEnd >= $lunchStart && $thisEnd <= $lunchEnd)
{
    //occurs during lunch
}

That should work for you.

However can you clarify what you mean by it doesn't cover all the times?

Answer 2

Here you need this logic
Change time to second so it will be easy

but your date should be in ("y/m/d") format

$thisStart_1 = strtotime($thisStart);


$lunchStart_1 = strtotime($lunchStart);  


$thisEnd_1 = strtotime($thisEnd);    

your Time will look like that for example:-
2014-04-30------->1398808800 (in second)

So here you you get your time on second so it will be easy to check the time managment..

if (($thisStart_1 <= $lunchStart_1) && ($thisEnd_1 >= $lunchStart_1)) {
     //happen at same time
 }

IF YOUR DATE IN DIFFERENT FORMAT THEN USE THIS:-

date in your format-*/

$gDate='30/04/2014';//whatever format here put same in this "date_create_from_format" function

change date format for make it usable by strtotime function

 $date = date_create_from_format('d/m/Y', $gDate);

echo forate to check the really format

$askfrmt = date_format($date, 'Y-m-d');

strtotime function on your given date

$askfrmta = strtotime($askfrmt);

Answer 3

I'm not realy sure to have understanded your question, but if you want to know if thisStart and thisEnd are both during lunch try this:

if (!($thisStart > $lunchEnd || $thisEnd < $lunchStart) ){    
// Occurs during lunch
}