(PHP 5 >= 5.5.0, PHP 7, PHP 8)
date_create_immutable — create a new DateTimeImmutable object
$datetime = "now", ?DateTimeZone $timezone = null): DateTimeImmutable|falseThis is the procedural version of DateTimeImmutable::__construct().
Unlike the DateTimeImmutable constructor, it will return
false instead of an exception if the passed in
datetime string is invalid.
Returns a new DateTimeImmutable instance 或者在失败时返回 false