如何計算PHP中兩個日期時間的小時間隔？

Question

我正在創建一個在線預訂系統。當用戶點擊日曆中的日期時，它會返回該日期的兩個日期時間（開始和結束）。我試圖計算從開始到結束的所有小時數，但我需要間隔顯示小時數。

比方說，用戶已添加可用時間從明天10.00-14.00然後我需要顯示的時間是這樣的：

10.00-11.00

11.00-12.00

12.00-13.00

13.00-14.00

具體的一天。

我到目前爲止。

public function getTimes() 
{ 

    $user_id = Input::get("id"); //get the user id 
    $selectedDay = Input::get('selectedDay'); // We get the data from AJAX for the day selected, then we get all available times for that day 
    $availableTimes = Nanny_availability::where('user_id', $user_id)->get(); 

    // We will now create an array of all booking datetimes that belong to the selected day 
    // WE WILL NOT filter this in the query because we want to maintain compatibility with every database (ideally) 

    // For each available time... 
    foreach($availableTimes as $t => $value) { 
    $startTime = new DateTime($value->booking_datetime); 

    if ($startTime->format("Y-m-d") == $selectedDay) { 
     $endTime = new DateTime($value->booking_datetime); 

     date_add($endTime, DateInterval::createFromDateString('3600 seconds')); 

     // Try to grab any appointments between the start time and end time 
     $result = Nanny_bookings::timeBetween($startTime->format("Y-m-d H:i"), $endTime->format("Y-m-d H:i")); 

     // If no records are returned, the time is okay, if not, we must remove it from the array 
     if($result->first()) { 
     unset($availableTimes[$t]); 
     } 

    } else { 
     unset($availableTimes[$t]); 
    } 
    } 

    return response()->json($availableTimes); 
} 

如何獲取間隔？

Answer 1

假設起點和終點之間的時間差爲1，按您的問題，您可以使用DateInterval和DatePeriod，遍歷時間，如：

$startDate = new DateTime('2017-07-18 10:15:00'); 
$endDate = new DateTime('2017-07-18 14:15:00'); 
$interval = new DateInterval('PT1H'); //interval of 1 hour 
$daterange = new DatePeriod($startDate, $interval ,$endDate); 

$times = []; 
foreach($daterange as $date){ 
    $times[] = $date->format("H:i") . " -- " 
     . $date->add(new DateInterval("PT1H"))->format("H:i"); 
} 
echo "<pre>"; print_r($times); 
//gives 
Array 
(
    [0] => 10:15 -- 11:15 
    [1] => 11:15 -- 12:15 
    [2] => 12:15 -- 13:15 
    [3] => 13:15 -- 14:15 
) 

更新

你可以使用json_encode()爲了返回json時間數據，如：

$jsonTimes = json_encode($times);