背景：
我将时间列表显示为关联数组。阵列如下(上午11:00至12:00(：
array(5) {
[1475226000]=>
string(35) "September 30, 2016, 11:00 am +02:00"
[1475226900]=>
string(35) "September 30, 2016, 11:15 am +02:00"
[1475227800]=>
string(35) "September 30, 2016, 11:30 am +02:00"
[1475228700]=>
string(35) "September 30, 2016, 11:45 am +02:00"
[1475229600]=>
string(35) "September 30, 2016, 12:00 pm +02:00"
}
密钥是unix时间戳。该值是显示在用户时区中的格式化unix时间戳。
我的代码
这是我的注释类，它生成数组：
<?php
class Time
{
public function __construct()
{
date_default_timezone_set('UTC');
}
public function getTimeSlots($year, $month, $day, $start_time = '11:00', $end_time = '12:00')
{
$date = $year . '-' . $month . '-' . $day;
// get GMT timestamp of 2016-09-30 00:00 Europe/London
$gmt_date = strtotime($this->getRelativeDateTime($date));
$gmt_date = $gmt_date - 7200;
// subtract from or add to $gmt_date whatever our timezone offset in hours is
// get start time offset in seconds from 2016-9-30 00:00
$seconds_start = strtotime('1970-01-01 ' . $start_time . ' UTC');
// get end time offset in seconds from 2016-9-30 00:00
$seconds_end = strtotime('1970-01-01 ' . $end_time . ' UTC');
$unix_seconds_start = $gmt_date + $seconds_start; // GMT
$unix_seconds_end = $gmt_date + $seconds_end;
// echo $unix_seconds_start . date('Y-m-d H:i', $unix_seconds_start);
// echo '<br>';
// echo $unix_seconds_end . date('Y-m-d H:i', $unix_seconds_end);
while ($unix_seconds_start <= $unix_seconds_end) {
$dt = new DateTime('@' . $unix_seconds_start);
$dt->setTimezone(new DateTimeZone('Europe/Paris'));
$slots[$unix_seconds_start] = $dt->format('F j, Y, H:i a P');
$unix_seconds_start = $unix_seconds_start + 900;
}
echo '<pre>', var_dump($slots), '</pre>';
}
public function getRelativeDateTime($date)
{
$date = new DateTime($date, new DateTimeZone('Europe/Paris'));
return $date->format('Y-m-d H:i');
}
}
$time = new Time;
$time->getTimeSlots('2016', '09', '30');
// we want var_dump to show the following
// --------------------------------------
//
// array () {
// from 00:00
// 1234567890 (unix timestamp) => '00:00' (users time)
// 1234567890 (unix timestamp) => '00:15' (users time)
// 1234567890 (unix timestamp) => '00:30' (users time)
// 1234567890 (unix timestamp) => '00:45' (users time)
// to 24:00
// }
问题
我希望我的时间严格从00:00开始，到24:00结束，但正如你所看到的，如果你运行代码，我会得到一个偏移量，这取决于我的用户时间偏移量。
这意味着，如果用户的时区为欧洲/伦敦+01:00，我的数组将从01:00开始。
问题在16号线上。正如您所看到的，如果您取消对第16行的注释并运行代码，它会起作用，但这只是因为我明确地从时间戳中减去了两个小时(以秒为单位(。
http://sandbox.onlinephpfunctions.com/code/d19b6fc5335f41af491dfedcfae2c390aa3000ec
问题
有没有办法使用DateTime(或任何其他方法！(从$gmt_date变量中减去用户时区偏移量？
这是您的答案。使用DateTime对象并创建时区。
<?php
$tz_array = array('UTC', 'Europe/Paris', 'Asia/Jerusalem');
foreach ($tz_array as $tz) {
$time = new Time($tz);
$time->getTimeSlots('2016', '09', '30');
}
class Time {
/** @var DateTimeZone */
private $tz;
public function __construct($tz) {
$this->tz = new DateTimeZone($tz);
}
public function getTimeSlots($year, $month, $day, $start_time = '11:00', $end_time = '12:00') {
$from = new DateTime("$year-$month-$day $start_time:00", $this->tz);
$to = new DateTime("$year-$month-$day $end_time:00", $this->tz);
$unix_seconds_start = $from->getTimestamp();
$unix_seconds_end = $to->getTimestamp();
$interval = new DateInterval('PT900S'); // 900 seconds interval
$slots = array();
while ($unix_seconds_start <= $unix_seconds_end) {
$slots[$unix_seconds_start] = $from->format('F j, Y, H:i a P');
$from->add($interval);
$unix_seconds_start = $from->getTimestamp();
}
echo
"Time slots demo for timezone ",
$this->tz->getName();
var_dump($slots);
}
}