/website/source/php/math/mt_rand.html

---
warning: 'This file is auto generated by `npm run web:inject`, do not edit by hand'
examples:
  - 'mt_rand(1, 1)'
returns:
  - '1'
dependencies: []
authors:
  original by:
    - 'Onno Marsman (https://twitter.com/onnomarsman)'
  improved by:
    - 'Brett Zamir (https://brett-zamir.me)'
  input by:
    - Kongo
notes: []
type: function
layout: function
title: PHP's mt_rand in JavaScript
description: >-
  Here’s what our current JavaScript equivalent to <a
  href="https://php.net/manual/en/function.mt-rand.php">PHP's mt_rand</a> looks
  like.
function: mt_rand
category: math
language: php
permalink: php/math/mt_rand/
alias:
  - /functions/php/mt_rand/
  - /functions/math/mt_rand/
  - /php/mt_rand/
  - /functions/mt_rand/
---
{% codeblock lang:javascript %}module.exports = function mt_rand (min, max) { // eslint-disable-line camelcase
  //  discuss at: https://locutus.io/php/mt_rand/
  // original by: Onno Marsman (https://twitter.com/onnomarsman)
  // improved by: Brett Zamir (https://brett-zamir.me)
  //    input by: Kongo
  //   example 1: mt_rand(1, 1)
  //   returns 1: 1

  const argc = arguments.length
  if (argc === 0) {
    min = 0
    max = 2147483647
  } else if (argc === 1) {
    throw new Error('Warning: mt_rand() expects exactly 2 parameters, 1 given')
  } else {
    min = parseInt(min, 10)
    max = parseInt(max, 10)
  }
  return Math.floor(Math.random() * (max - min + 1)) + min
}
{% endcodeblock %}