The HRTime\Unit class
(PECL hrtime >= 0.4.3)
简介
类摘要
class HRTime\Unit
{
/* Constants */
/* 方法 */
}预定义常量
HRTime\Unit::SECOND
HRTime\Unit::MILLISECOND
HRTime\Unit::MICROSECOND
HRTime\Unit::NANOSECOND
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