The HRTime\Unit class

(PECL hrtime >= 0.4.3)

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HRTime\Unit {

/* Constants */

const integer SECOND = 0 ;

const integer MILLISECOND = 1 ;

const integer MICROSECOND = 2 ;

const integer NANOSECOND = 3 ;

/* �� */

}

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HRTime\Unit::SECOND
HRTime\Unit::MILLISECOND
HRTime\Unit::MICROSECOND
HRTime\Unit::NANOSECOND