class Interval
Tests if a given number belongs to a given math interval. An interval can represent a finite set of numbers: {1,2,3,4} An interval can represent numbers between two numbers: [1, +Inf] ]-1,2[ The left delimiter can be [ (inclusive) or ] (exclusive). The right delimiter can be [ (exclusive) or ] (inclusive). Beside numbers, you can use -Inf and +Inf for the infinite.
Methods
static bool test(int $number, string $interval) Tests if the given number is in the math interval.