php时间戳的平均值 - php average of timestamp

我想计算用户在特定持续时间内的平均时间，我有中每个时间的时间戳值。为了计算平均值，我想加上所有的时间戳，除以天数。但所有时间戳的总和给出了错误的输入，所以我想将时间戳转换为秒，这样我就可以将它们相加并计算平均值。我正在使用以下代码。

$timeInTotalSec = 0;
$timeInTotalSec += intval(date("H",$punchintime)) * 60 * 60;
$timeInTotalSec += intval(date("i",$punchintime)) * 60;
$timeInTotalSec += intval(date("s",$punchintime));`

但是

date("H",$punchintime)

给了我适当的价值，但

intval(date("H",$punchintime))

给我0

提前谢谢。

你的问题不是很清楚，但我想我理解你想从一系列打卡时间中计算平均打卡时间。

日期对此没有好处，您需要为每个$punchintime隔离午夜后的秒数，并计算其平均值。下面的代码可以做到这一点。我创建了一个时间数组来说明我的观点，我对您的系统一无所知，所以生成输入数组取决于您。

$punchInTimes = array(
    '2013-08-01 09:00',
    '2013-08-02 09:06',
    '2013-08-03 08:50',
    '2013-08-04 09:20',
    '2013-08-05 09:01',
    '2013-08-06 08:56',
);
function getAverageTime(array $times)
{
    $seconds = $average = 0;
    $result = null;
    //get seconds after midnight
    foreach($times as $dateString){
        $date = new 'DateTime($dateString);
        list($datePart) = explode(' ', $dateString);
        $midnight = new 'DateTime($datePart);
        $seconds += $date->getTimestamp() - $midnight->getTimestamp();
    }
    if($seconds > 0){
        $average = $seconds/count($times);
        $hours = floor($average/3600);
        $average -= ($hours * 3600);
        $minutes = floor($average/60);
        $average -= ($minutes * 60);
        $result = new 'DateInterval("PT{$hours}H{$minutes}M{$average}S");
    } else $result = new 'DateInterval('PT0S');
    return $result->format("%Hh %Mm %Ss");
}
echo "Average clock in time is " . getAverageTime($punchInTimes);

输出：-

平均时钟进入时间为09h 00m 10s

这不适用于跨越午夜的时间，例如这样的数组：-

$aroundMidnight = array(
    '2013-08-01 23:59',
    '2013-08-02 00:02',
);

您所说的是unixtime。Unixtime是从unix纪元（1970年1月1日）算起的秒数。要获得两个时间戳中不同的时间，您可以简单地从第二个时间戳减去第一个时间戳。

$timestamp1 = date('U');

一段时间后：

$timestamp2 = date('U');

存储这些变量，当需要获得差异时：

$difference = $timestamp2 - $timestamp1;

然后，您可以使用基本数学设置时间格式：

$seconds = $difference;
$minutes = $seconds/60; 
$hours = $minutes/60;
$days = $hours/24;

希望这能有所帮助！

尝试此代码

public static function sec2hms($sec, $padHours = false) {
    // start with a blank string
    $hms = "";
    // do the hours first: there are 3600 seconds in an hour, so if we divide
    // the total number of seconds by 3600 and throw away the remainder, we're
    // left with the number of hours in those seconds
    $hours = intval(intval($sec) / 3600);
    // add hours to $hms (with a leading 0 if asked for)
    $hms .= ($padHours) ? str_pad($hours, 2, "0", STR_PAD_LEFT) . ":" : $hours . ":";
    // dividing the total seconds by 60 will give us the number of minutes
    // in total, but we're interested in *minutes past the hour* and to get
    // this, we have to divide by 60 again and then use the remainder
    $minutes = intval(($sec / 60) % 60);
    // add minutes to $hms (with a leading 0 if needed)
    $hms .= str_pad($minutes, 2, "0", STR_PAD_LEFT) . ":";
    // seconds past the minute are found by dividing the total number of seconds
    // by 60 and using the remainder
    $seconds = intval($sec % 60);
    // add seconds to $hms (with a leading 0 if needed)
    $hms .= str_pad($seconds, 2, "0", STR_PAD_LEFT);
    // done!
    return $hms;
}