(PHP 8 >= 8.4.0)
DateTime::setMicrosecond — Sets microsecond part of the time
Sets microsecond part of the time.
Like DateTimeImmutable::setMicrosecond() but works with DateTime.
microsecond0 to 999999).
返回方法链修改后的 DateTime 对象。
If the microsecond is outside the range [0, 999999],
a DateRangeError is thrown.
示例 #1 DateTime::setMicrosecond() example
<?php
$date = DateTime::createFromTimestamp(123.456789);
echo $date->format('Y-m-d H:i:s.u') . PHP_EOL;
$date->setMicrosecond(987654);
echo $date->format('Y-m-d H:i:s.u') . PHP_EOL;
?>以上示例会输出：
1970-01-01 00:02:03.456789 1970-01-01 00:02:03.987654