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The Random\IntervalBoundary Enum

Introduction

(PHP 8 >= 8.3.0)

The Random\IntervalBoundary enum specifies whether an interval includes the boundary values within the set of values lying in the interval.

Enum synopsis

enum Random\IntervalBoundary
{
case ClosedOpen ; // A right-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.

case OpenClosed ; // A left-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.

}

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https://www.php.net/manual/en/enum.random-intervalboundary.php