php - 将时间分配为2小时间隔(带偏移)

以下是json中的列表时间：

$datatest = '{
  "dt": [
    "2018-06-10T00:16:02.200Z",
    "2018-06-11T03:35:10.629Z",
    "2018-06-11T04:20:58.629Z",
    "2018-06-11T05:00:05.171Z",
    "2018-06-11T05:49:05.171Z",
    "2018-06-11T06:53:55.629Z",
    "2018-06-11T06:57:13.708Z"
  ]
}';

我只想要一个2小时间隔的分配时间。这是我的php代码：

$data = json_decode($datatest, false);

echo "<table border=\"1\">";
foreach($data->{'dt'} as $time){
  echo "<tr>";
  echo "<td>".$time;
  $time_in_sec = strtotime($time);
  echo "==>".$time_in_sec."</td>";
  $timeslot = setTimeSlot($time_in_sec);
  echo "<td>Rounded down: " . date('Y-m-d\TH:i:s\Z', $timeslot)."</td>";
  echo "</tr>";
}
echo "</table>";

function setTimeSlot($timeinseconds){

    $seconds = $timeinseconds;
    $rounded_seconds = floor($seconds / (2 * 60 * 60)) * (2 * 60 * 60);
    return $rounded_seconds;
}

结果如下。我不想要这个输出：

2018-06-10T00:16:02.200Z==>1528589762 Rounded down: 2018-06-10T00:00:00Z
2018-06-11T03:35:10.629Z==>1528688110 Rounded down: 2018-06-11T02:00:00Z
2018-06-11T04:20:58.629Z==>1528690858 Rounded down: 2018-06-11T04:00:00Z
2018-06-11T05:00:05.171Z==>1528693205 Rounded down: 2018-06-11T04:00:00Z
2018-06-11T05:49:05.171Z==>1528696145 Rounded down: 2018-06-11T04:00:00Z
2018-06-11T06:53:55.629Z==>1528700035 Rounded down: 2018-06-11T06:00:00Z
2018-06-11T06:57:13.708Z==>1528700233 Rounded down: 2018-06-11T06:00:00Z

我想修改上面的代码以添加偏移量1小时。我需要将其舍入到2小时的间隔，这样输出将是这样，而不是从0小时开始。我不知道怎么计算偏移量。
循环时间应该是：07、09、11、13、15、17、19、21、23、01，…
不应该：08，10，12，14，16，18，…
我终于解决了这个问题。抱歉给你添麻烦了。这是密码。：

function setTimeSlot($timeinseconds){
    $offset = 3600;//1 hours offset
    $seconds = $timeinseconds;
    $rounded_seconds = floor(($seconds - $offset) / (2 * 60 * 60)) * (2 * 60 * 60);
    return ($rounded_seconds + $offset);
}

最佳答案

我想这对你有用。这将按24小时格式四舍五入到最近的奇数小时。
注意，我关闭了html元素，我只是在命令行上的一个php脚本中运行它。另外，我还添加了一些日期字符串用于测试。

<?php

$datatest = '{
  "dt": [
    "2018-06-10T00:16:02.200Z",
    "2018-06-11T03:35:10.629Z",
    "2018-06-11T04:20:58.629Z",
    "2018-06-11T05:00:05.171Z",
    "2018-06-11T05:49:05.171Z",
    "2018-06-11T06:53:55.629Z",
    "2018-06-11T06:57:13.708Z",
    "2018-06-11T11:57:13.708Z",
    "2018-06-11T15:57:13.708Z",
    "2018-06-11T18:57:13.708Z",
    "2018-06-11T23:57:13.708Z"
  ]
}';

$data = json_decode($datatest, false);

foreach($data->{'dt'} as $time){
  echo $time;
  $time_in_sec = strtotime($time);
  // uncomment the following to see the rounding
  //$hour = date('H', $time_in_sec);
  //$roundedHour = roundHour($hour);
  //echo "  " . $hour . "  " . $roundedHour;
  echo "  " . formatDate(getRoundedTime($time_in_sec)). "  ";
  echo "\n";
}

function formatDate($time) {
  return date('Y-m-d\TH:i:s\Z', $time);
}

function getRoundedTime($time) {
    $day = date('d', $time);
    $month = date('m', $time);
    $year = date('Y', $time);
    $hour = roundHour(date('H', $time));
    return mktime($hour, 0, 0, $month, $day, $year);
}

//will round down to nearest odd hour, 01-23 hours
function roundHour(string $hour) {
  $newHour = intval($hour);
  $mod = $newHour % 2;
  if ($mod === 0) {
    $newHour = $newHour - 1;
    $newHour = $newHour === -1 ? 23 : $newHour;
  }
  $roundedHour = (string) $newHour;
  return str_pad($roundedHour, 2, "0", STR_PAD_LEFT);
}

这将产生以下结果：

2018-06-10T00:16:02.200Z  2018-06-10T23:00:00Z
2018-06-11T03:35:10.629Z  2018-06-11T03:00:00Z
2018-06-11T04:20:58.629Z  2018-06-11T03:00:00Z
2018-06-11T05:00:05.171Z  2018-06-11T05:00:00Z
2018-06-11T05:49:05.171Z  2018-06-11T05:00:00Z
2018-06-11T06:53:55.629Z  2018-06-11T05:00:00Z
2018-06-11T06:57:13.708Z  2018-06-11T05:00:00Z
2018-06-11T11:57:13.708Z  2018-06-11T11:00:00Z
2018-06-11T15:57:13.708Z  2018-06-11T15:00:00Z
2018-06-11T18:57:13.708Z  2018-06-11T17:00:00Z
2018-06-11T23:57:13.708Z  2018-06-11T23:00:00Z