将分钟增加到最接近的15分钟间隔

Question

我想我差不多到了-试图获得当前时间，然后添加一个小时，然后将选项输出到15分钟的间隔-所以如果是14:12，第一个可用的时段将是14:15，然后每15分钟一次，直到我的结束时间

$start  = new DateTime("Now");
$start->add(new DateInterval('PT1H'));
$end          = new DateTime("2015-05-16 17:00");
$interval     = new DateInterval('PT15M');
$period       = new DatePeriod($start, $interval, $end);
$current_date = date('d-M-Y g:i:s A');
$current_time = strtotime($current_date);

foreach ($period as $dt)
{
    echo $dt->format('H:i')."<br>";
}

Answer 1

您可以将一个数字钳制为下一个15的倍数，如下所示：

ceil($num / 15) * 15

如上所述调整$start日期。示例：

$start   = new DateTime("today 14:12"); // 2015-05-16 14:12:00
$hour    = (int) $start->format("H");   // 14
$minute  = (int) $start->format("i");   // 12
$clamped = ceil($minute / 15) * 15;     // 15
$start->setTime($hour, $clamped);       // 2015-05-16 14:15:00

setTime注意：超出范围的值将添加到其父值中。

Answer 2

我想你的问题是如何进入正确的第15分钟？

这能解决你的问题吗？：

<?php
$start          = new DateTime("Now");
$currentMinutes = $start->format('i');
if ($currentMinutes > 15) {
    $start->setTime(($start->format('H') + 1), 15);
} elseif($currentMinutes < 15) {
    $start->setTime($start->format('H'), 15);
}
$end          = new DateTime("2015-05-16 17:00");
$interval     = new DateInterval('PT15M');
$period       = new DatePeriod($start, $interval, $end);
$current_date = date('d-M-Y g:i:s A');
$current_time = strtotime($current_date);

foreach ($period as $dt)
{
    echo $dt->format('H:i')."<br>";
}

或者如果你喜欢短：

$start          = new DateTime("2015-05-16 13:15");
$currentMinutes = $start->format('i');
$currentHour    = $start->format('H');
$start->setTime(($currentMinutes > 15 ? ++$currentHour : $currentHour), 15);
[...]

Answer 3

$min15InSecs = 15*60;
$min15 = time()-(time()%$min15InSecs)+$min15InSecs;
$start  = new DateTime(date("Y-m-d H:i", $min15));
$start->add(new DateInterval('PT1H'));
$end  = new DateTime("2015-05-16 19:00");
$interval = new DateInterval('PT15M');
$period   = new DatePeriod($start, $interval, $end);
$current_date = date('d-M-Y g:i:s A');
$current_time = strtotime($current_date);

foreach ($period as $dt)
{
    echo $dt->format('H:i')."<br>";
}