---
warning: 'This file is auto generated by `npm run web:inject`, do not edit by hand'
examples:
  - intval('Kevin van Zonneveld')
  - intval(4.2)
  - 'intval(42, 8)'
  - intval('09')
  - 'intval(''1e'', 16)'
  - intval(0x200000001)
  - 'intval(''0xff'', 0)'
  - 'intval(''010'', 0)'
estarget: es5
returns:
  - '0'
  - '4'
  - '42'
  - '9'
  - '30'
  - '8589934593'
  - '255'
  - '8'
dependencies: []
authors:
  original by:
    - 'Kevin van Zonneveld (http://kvz.io)'
  improved by:
    - stensi
  bugfixed by:
    - 'Kevin van Zonneveld (http://kvz.io)'
    - 'Brett Zamir (http://brett-zamir.me)'
    - 'Rafał Kukawski (http://blog.kukawski.pl)'
  input by:
    - Matteo
notes: []
type: function
layout: function
title: PHP's intval in JavaScript
description: >-
  Here’s what our current JavaScript equivalent to <a
  href="http://php.net/manual/en/function.intval.php">PHP's intval</a> looks
  like.
function: intval
category: var
language: php
permalink: php/var/intval/
alias:
  - /functions/php/intval/
  - /functions/var/intval/
  - /php/intval/
  - /functions/intval/
---
{% codeblock lang:javascript %}module.exports = function intval (mixedVar, base) {
  //  discuss at: http://locutus.io/php/intval/
  // original by: Kevin van Zonneveld (http://kvz.io)
  // improved by: stensi
  // bugfixed by: Kevin van Zonneveld (http://kvz.io)
  // bugfixed by: Brett Zamir (http://brett-zamir.me)
  // bugfixed by: Rafał Kukawski (http://blog.kukawski.pl)
  //    input by: Matteo
  //   example 1: intval('Kevin van Zonneveld')
  //   returns 1: 0
  //   example 2: intval(4.2)
  //   returns 2: 4
  //   example 3: intval(42, 8)
  //   returns 3: 42
  //   example 4: intval('09')
  //   returns 4: 9
  //   example 5: intval('1e', 16)
  //   returns 5: 30
  //   example 6: intval(0x200000001)
  //   returns 6: 8589934593
  //   example 7: intval('0xff', 0)
  //   returns 7: 255
  //   example 8: intval('010', 0)
  //   returns 8: 8

  var tmp, match

  var type = typeof mixedVar

  if (type === 'boolean') {
    return +mixedVar
  } else if (type === 'string') {
    if (base === 0) {
      match = mixedVar.match(/^\s*0(x?)/i)
      base = match ? (match[1] ? 16 : 8) : 10
    }
    tmp = parseInt(mixedVar, base || 10)
    return (isNaN(tmp) || !isFinite(tmp)) ? 0 : tmp
  } else if (type === 'number' && isFinite(mixedVar)) {
    return mixedVar < 0 ? Math.ceil(mixedVar) : Math.floor(mixedVar)
  } else {
    return 0
  }
}
{% endcodeblock %}