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DateTimeImmutable::setISODate

(PHP 5 >= 5.5.0, PHP 7)

DateTimeImmutable::setISODateSets the ISO date

说明

public DateTimeImmutable::setISODate ( int $year , int $week [, int $day = 1 ] ) : DateTimeImmutable

Like DateTime::setISODate() but works with DateTimeImmutable.