PHP - Manual: Random\IntervalBoundary
2025-10-31
The Random\IntervalBoundary Enum
简介
The Random\IntervalBoundary enum specifies whether an interval includes the boundary values within the set of values lying in the interval.
注解摘要
case ClosedOpen
;
/** A left-open interval. The lower boundary is included in the interval, the upper boundary is not. */
/** A left-open interval. The lower boundary is included in the interval, the upper boundary is not. */
case ClosedClosed
;
/** A closed interval. Both boundary values are included in the interval. */
/** A closed interval. Both boundary values are included in the interval. */
case OpenClosed
;
/** A right-open interval. The upper boundary is included in the interval, the lower boundary is not. */
/** A right-open interval. The upper boundary is included in the interval, the lower boundary is not. */
case OpenOpen
;
/** An open interval. Neither boundary value is included in the interval. */
}/** An open interval. Neither boundary value is included in the interval. */
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官方地址：https://www.php.net/manual/en/enum.random-intervalboundary.php
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