PHP's dechex in TypeScript

How to use

Install via yarn add locutus and import: import { dechex } from 'locutus/php/math/dechex'.

Or with CommonJS: const { dechex } = require('locutus/php/math/dechex')

Use a bundler that supports tree-shaking so you only ship the functions you actually use. Vite, webpack, Rollup, and Parcel all handle this. For server-side use this is less of a concern.

Examples

These examples are extracted from test cases that automatically verify our functions against their native counterparts.

#	code	expected result
1	dechex(10)	'a'
2	dechex(47)	'2f'
3	dechex(-1415723993)	'ab9dc427'

Here's what our current TypeScript equivalent to PHP's dechex looks like.

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

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export function dechex(number: number): string {
  //  discuss at: https://locutus.io/php/dechex/
  // original by: Philippe Baumann
  // bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  // improved by: https://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript
  //    input by: pilus
  //   example 1: dechex(10)
  //   returns 1: 'a'
  //   example 2: dechex(47)
  //   returns 2: '2f'
  //   example 3: dechex(-1415723993)
  //   returns 3: 'ab9dc427'

  let normalized = parseInt(String(number), 10)
  if (normalized < 0) {
    normalized = 0xffffffff + normalized + 1
  }
  return normalized.toString(16)
}

export function dechex(number) {
  //  discuss at: https://locutus.io/php/dechex/
  // original by: Philippe Baumann
  // bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  // improved by: https://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript
  //    input by: pilus
  //   example 1: dechex(10)
  //   returns 1: 'a'
  //   example 2: dechex(47)
  //   returns 2: '2f'
  //   example 3: dechex(-1415723993)
  //   returns 3: 'ab9dc427'

  let normalized = parseInt(String(number), 10)
  if (normalized < 0) {
    normalized = 0xffffffff + normalized + 1
  }
  return normalized.toString(16)
}

Improve this function

Locutus is a community effort following The McDonald's Theory: we ship first iterations, hoping others will improve them. If you see something that could be better, we'd love your contribution.

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