DateTime::getOffset()
DateTimeImmutable::getOffset
DateTimeInterface::getOffset
date_offset_get
(PHP 5 >= 5.2.1, PHP 7)
Returns the timezone offset
说明
面向对象风格public DateTime::getOffset(void): int
public DateTimeImmutable::getOffset(void): int
public DateTimeInterface::getOffset(void): int
过程化风格
date_offset_get(DateTimeInterface$object): int
Returns the timezone offset.
参数
- $object
仅为过程化风格:由date_create()返回的DateTime类型的对象。
返回值
Returns the timezone offset in seconds from UTC on success 或者在失败时返回FALSE
.
范例
Example #1DateTime::getOffset()example
面向对象风格
<?php $winter = new DateTime('2010-12-21', new DateTimeZone('America/New_York')); $summer = new DateTime('2008-06-21', new DateTimeZone('America/New_York')); echo $winter->getOffset() . "\n"; echo $summer->getOffset() . "\n"; ?>
过程化风格
<?php $winter = date_create('2010-12-21', timezone_open('America/New_York')); $summer = date_create('2008-06-21', timezone_open('America/New_York')); echo date_offset_get($winter) . "\n"; echo date_offset_get($summer) . "\n"; ?>
以上例程会输出:
-18000 -14400
Note:-18000 =-5 hours,-14400 =-4 hours.
This will be useful for converting offset values into GMT format <?php //target time zone $target_time_zone = new DateTimeZone('America/Los_Angeles'); //find kolkata time $kolkata_date_time = new DateTime('now', $target_time_zone); //get the exact GMT format echo 'GMT '.$kolkata_date_time->format('P');