DateTimeImmutable::createFromInterface
(PHP 8)
DateTimeImmutable::createFromInterface — Returns new DateTimeImmutable object encapsulating the given DateTimeInterface object
说明
参数
-
object -
The DateTimeInterface object that needs to be converted to an immutable version. This object is not modified, but instead a new DateTimeImmutable object is created containing the same date, time, and timezone information.
返回值
Returns a new DateTimeImmutable instance.
范例
示例 #1 Creating an immutable date time object
<?php
$date = new DateTime("2014-06-20 11:45 Europe/London");
$immutable = DateTimeImmutable::createFromInterface($date);
$date = new DateTimeImmutable("2014-06-20 11:45 Europe/London");
$also_immutable = DateTimeImmutable::createFromInterface($date);
?>
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User Contributed Notes 1 note
divinity76 at gmail dot com ¶
11 months ago
php7 polyfill:
<?php
function PolyfillDateTimeImmutableCreateFromInterface(DateTimeInterface $dti):DateTimeImmutable{
$tz = $dti->getTimezone();
$ret = DateTimeImmutable::createFromFormat(DateTimeInterface::RFC3339, $dti->format(DateTimeInterface::RFC3339));
if(!!$tz){
// without this: timezone +01:00
// with this: timezone Europe/Oslo
$ret = $ret->setTimezone($tz);
}
return $ret;
}
?>
testing it:
<?php
$dt = new DateTime("1970-01-01",timezone_open("Europe/Oslo"));
$dti = PolyfillDateTimeImmutableCreateFromInterface($dt);
var_dump($dti->format(DateTime::RFC3339), $dti->getTimezone());
die();
?>
gives:
string(25) "1970-01-01T00:00:00+01:00"
object(DateTimeZone)#2 (2) {
["timezone_type"]=>
int(3)
["timezone"]=>
string(11) "Europe/Oslo"
}
- and warning: using the TimeZone argument of the DateTimeImmutable constructor is a trap, in the example above if i used the constructor argument instead of setTimezone(), it would become "timezone_type=>1 timezone=>+01:00" instead of "timezone=>europe/oslo", the timezone name would be lost.
备份地址：http://www.lvesu.com/blog/php/datetimeimmutable.createfrominterface.php