php时间戳问题
php函数中的date函数在某些系统(如 Windows)中限制为从 1970 年 1 月 1 日到 2038 年 1 月 19 日。
现在我有个时间戳是超过了2038年后,用date不能正常转化成正确的标准时间格式。
还有一个问题就是我有个时间戳1356969600,转化成正常效果是2013-1-1 00:00:00
例子
$dt = new DateTime('@1356969600');echo $dt->format('Y-m-d H:i:s');
通过例子转化却变成了2012-12-31 16:00:00,比正常效果足足少了八个小时
回复讨论(解决方案)
date_default_timezone_set("PRC");
加上这句试试看看
date_default_timezone_set("PRC");
加上这句试试看看
这个没用的,这个时间戳又不是实时更新的,都是过去的时间,故没用,你可以试试看
8小时是因为中国在+8区。
最好在php.ini里修改timezone
时间戳是从1970年1月1日开始的秒数,跟时区无关。
手册: http://www.php.net/manual/en/datetime.construct.php
// Using a UNIX timestamp. Notice the result is in the UTC time zone.
$date = new DateTime('@946684800');
echo $date->format('Y-m-d H:i:sP') . "\n";
date_default_timezone_set("Europe/London");
$dt = new DateTime('@1356969600');
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), "\n";
echo date('Y-m-d H:i:s',1356969600),"\n";
date_default_timezone_set("Asia/Shanghai");
$dt = new DateTime('@1356969600');
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), "\n";
echo date('Y-m-d H:i:s',1356969600),"\n\n";
date_default_timezone_set("Asia/Shanghai");
$dt = new DateTime('@1356969600');
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), "\n";
echo date('Y-m-d H:i:s',1356969600),"\n";
$dt->setTimezone(new DateTimeZone('Asia/Shanghai'));
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), "\n";
echo date('Y-m-d H:i:s',1356969600),"\n";
date_default_timezone_set("Europe/London");
$dt = new DateTime('@1356969600');
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), "\n";
echo date('Y-m……
echo $dt->format('Y-m-d H:i:s'), "\n"; // 2012-12-31 16:00:00
date('Y-m-d H:i:s',1356969600),"\n"; // 2013-01-01 00:00:00
时区的设置,我在配置文件中配置好了,配置的是PRC
DateTime::format 被设计成不受外部设置影响(面向对象就应该如此)
所以无论你如何改变环境参数 date_default_timezone ,都不会影响输出结果
要想改变 DateTime::format 的时区设置,需要向
DateTime::setTimezone 传入一个时区对象 DateTimeZone
比如
$d = new DateTime('@1356969600');$d->setTimezone(new DateTimeZone('PRC'));echo $d->format('Y-m-d H:i:s');
时区问题吧……
看看我的最后一段
引用 5 楼 helloyou0 的回复:
date_default_timezone_set("Europe/London");
$dt = new DateTime('@1356969600');
echo $dt->getTimezone()->getName(),"\n";
echo $dt->format('Y-m-d H:i:s'), ……
你$dt = new DateTime('@1356969600');中的@1356969600时间轴生成的时候用的是哪个时间设置,转换的时候要统一,否则就会出现你那样的问题如,生成的时候用:date_default_timezone_set("PRC");转换页面也必须用:date_default_timezone_set("PRC");

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