仅将 HH:MM:SS 格式的时间转换为秒？

Question

如何将HH:MM:SS格式的时间转换为单位秒数？

P.S.时间有时可能仅采用MM:SS 格式。

Answer 1

什么都不需要explode：

$str_time = "23:12:95";

$str_time = preg_replace("/^([\d]{1,2})\:([\d]{2})$/", "00:$1:$2", $str_time);

sscanf($str_time, "%d:%d:%d", $hours, $minutes, $seconds);

$time_seconds = $hours * 3600 + $minutes * 60 + $seconds;

如果你不想使用正则表达式：

$str_time = "2:50";

sscanf($str_time, "%d:%d:%d", $hours, $minutes, $seconds);

$time_seconds = isset($seconds) ? $hours * 3600 + $minutes * 60 + $seconds : $hours * 60 + $minutes;

Answer 2

我认为最简单的方法是使用strtotime()函数：

$time = '21:30:10';
$seconds = strtotime("1970-01-01 $time UTC");
echo $seconds;

// same with objects (for php5.3+)
$time = '21:30:10';
$dt = new DateTime("1970-01-01 $time", new DateTimeZone('UTC'));
$seconds = (int)$dt->getTimestamp();
echo $seconds;

demo

---

函数date_parse()也可以用于解析日期和时间：

$time = '21:30:10';
$parsed = date_parse($time);
$seconds = $parsed['hour'] * 3600 + $parsed['minute'] * 60 + $parsed['second'];

demo

---

如果您将使用strtotime() 或date_parse() 解析格式MM:SS，它将失败（date_parse() 用于strtotime() 和DateTime），因为当您输入像xx:yy 这样的格式时，解析器会假定它是HH:MM 而不是MM:SS。我建议检查格式，如果您只有 MM:SS，请在前面加上 00:。

demo strtotime() demo date_parse()

---

如果你有超过 24 小时，那么你可以使用下一个函数（它适用于 MM:SS 和 HH:MM:SS 格式）：

function TimeToSec($time) {
    $sec = 0;
    foreach (array_reverse(explode(':', $time)) as $k => $v) $sec += pow(60, $k) * $v;
    return $sec;
}

demo

Answer 3

    $time = 00:06:00;
    $timeInSeconds = strtotime($time) - strtotime('TODAY');

Answer 4

您可以使用strtotime 函数从today 00:00:00 返回秒数。

$seconds= strtotime($time) - strtotime('00:00:00');

Answer 5

在伪代码中：

split it by colon
seconds = 3600 * HH + 60 * MM + SS

Answer 6

试试这个：

$time = "21:30:10";
$timeArr = array_reverse(explode(":", $time));
$seconds = 0;
foreach ($timeArr as $key => $value)
{
    if ($key > 2) break;
    $seconds += pow(60, $key) * $value;
}
echo $seconds;

Answer 7

简单

function timeToSeconds($time)
{
     $timeExploded = explode(':', $time);
     if (isset($timeExploded[2])) {
         return $timeExploded[0] * 3600 + $timeExploded[1] * 60 + $timeExploded[2];
     }
     return $timeExploded[0] * 3600 + $timeExploded[1] * 60;
}

Answer 8

function time2sec($time) {
    $durations = array_reverse(explode(':', $item->duration));
    $second = array_shift($durations);
    foreach ($durations as $duration) {
        $second += (60 * $duration);
    }
    return $second;
}
echo time2sec('4:52'); // 292
echo time2sec('2:01:42'); // 7302

Answer 9

<?php
$time    = '21:32:32';
$seconds = 0;
$parts   = explode(':', $time);

if (count($parts) > 2) {
    $seconds += $parts[0] * 3600;
}
$seconds += $parts[1] * 60;
$seconds += $parts[2];