如何检查数据库中是否已存在给定时间段内特定用户的工作时间。因此，当工作时间与给定日期和时间重叠时，该函数应返回 true。我试过了，但这不起作用。

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;
}

当我使用以下数据测试该函数时，它说存在重叠，即使没有重叠。

检查现有工作时间(1, 2023-06-01, 00:15, 2023-06-01, 03:00);

数据库中的值是 2023-06-01 03:30 到 11pm。