How to check if a time period overlaps with another time period in PHP Laravel

Question

How to check if the working hours of a specific user for a given time period already exist in the database. Therefore, the function should return true when working hours overlap with the given date and time. I tried it but it doesn't work.

function checkExistingWorkingHours($user_id, $start_date, $start_time, $end_date, $end_time)
{
    // dd($user_id . " " . $start_date . " " . $start_time . " " . $end_date . " " . $end_time);

    $startDateTime = Carbon::parse($start_date . ' ' . $start_time);
    $endDateTime = Carbon::parse($end_date . ' ' . $end_time);

    $overlapExists = WorkingHour::where('user_id', $user_id)
    ->where(function ($query) use ($startDateTime, $endDateTime) {
        $query->where(function ($query) use ($startDateTime, $endDateTime) {
            // Check for overlap where the start_datetime is between existing start_datetime and end_datetime
            $query->where(function ($query) use ($startDateTime, $endDateTime) {
                $query->where('start_date', '=', $startDateTime->format('Y-m-d'))
                    ->where('start_time', '<', $endDateTime->format('H:i'))
                    ->where('end_date', '=', $startDateTime->format('Y-m-d'))
                    ->where('end_time', '>', $startDateTime->format('H:i'));
            })->orWhere(function ($query) use ($startDateTime, $endDateTime) {
                $query->where('start_date', '<', $startDateTime->format('Y-m-d'))
                    ->where('end_date', '=', $startDateTime->format('Y-m-d'))
                    ->where('end_time', '>', $startDateTime->format('H:i'));
            });
        })->orWhere(function ($query) use ($startDateTime, $endDateTime) {
            // Check for overlap where the end_datetime is between existing start_datetime and end_datetime
            $query->where(function ($query) use ($startDateTime, $endDateTime) {
                $query->where('start_date', '=', $endDateTime->format('Y-m-d'))
                    ->where('end_date', '>=', $endDateTime->format('Y-m-d'))
                    ->where('start_time', '<', $endDateTime->format('H:i'));
            })->orWhere(function ($query) use ($startDateTime, $endDateTime) {
                $query->where('start_date', '<=', $startDateTime->format('Y-m-d'))
                    ->where('end_date', '>=', $endDateTime->format('Y-m-d'));
            });
        });
    })->exists();

    return $overlapExists;
}

When I test the function with the following data, it says there is overlap even though there is no overlap.

Check existing working hours (1, 2023-06-01, 00:15, 2023-06-01, 03:00);

The value in the database is 2023-06-01 03:30 to 11pm.

Answer 1

Try using this

$start = Carbon::parse($start_date . ' ' . $start_time)->stratOfDay();
$end = Carbon::parse($end_date . ' ' . $end_time)->endOfDay();
$overlapExists = WorkingHour::where('user_id', $user_id)->whereBetween('your column',[$start , $end])->exists();

Answer 2

Answer based on geertjanknapen's comment:

$period = CarbonPeriod::create("$start_date $start_time", "$end_date $end_time");
$start = Carbon::create("$to_check->start_date $to_check->start_time");
$end = Carbon::create("$to_check->end_date $to_check->end_time");


if ($period->overlaps($start, $end)) {
    return redirect()->back()->withInput()->with('error',"Time is overlapping!");
}