title tags
math, beginner

Clamps $num within the inclusive range specified by the boundary values $a and $b.

  • If $num falls within the range, return $num.
  • Otherwise, return the nearest number in the range, using min() and max().
function clampNumber($num, $a, $b)
  return max(min($num, max($a, $b)), min($a, $b));
clampNumber(2, 3, 5); // 3
clampNumber(1, -1, -5); // -1

Tags: PHP, PHP array, two numbers, boundary values, numbers, maths, min, max