(PHP 5 >= 5.6.0, PHP 7)
DateTimeImmutable::createFromMutable — Returns new DateTimeImmutable object encapsulating the given DateTime object
datetimeThe mutable DateTime object that you want to convert 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.
Example #1 Creating an immutable date time object
<?php
$date = new DateTime("2014-06-20 11:45 Europe/London");
$immutable = DateTimeImmutable::createFromMutable( $date );
?>
Returns a new DateTimeImmutable instance.
The previous example will not properly work.
<?php
DateTimeImmutable::createFromFormat('U', $date->getTimestamp(), $date->getTimezone());
?>
will always return a DateTimeImmutable object with a GMT timezone. createFromFormat seems to prefer the format to get the timeZone instead of the passed in timeZone.
This will work, but it is clunky:
<?php
$datei = DateTimeImmutable::createFromFormat('U', $date->getTimestamp(), $date->getTimezone());
$datei = $datei->setTimezone($date->getTimezone());
?>
Here's a polyfill for PHP <= 5.6:
<?php
function datetime_create_from_mutable(DateTime $date)
{
return DateTimeImmutable::createFromFormat(
'U',
$date->getTimestamp(),
$date->getTimezone()
);
}
?>
