PHP's strcasecmp in TypeScript

How to use

Install via yarn add locutus and import: import { strcasecmp } from 'locutus/php/strings/strcasecmp'.

Or with CommonJS: const { strcasecmp } = require('locutus/php/strings/strcasecmp')

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	strcasecmp('Hello', 'hello')	0

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

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

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export function strcasecmp(fString1: string, fString2: string): number {
  //      discuss at: https://locutus.io/php/strcasecmp/
  // parity verified: PHP 8.3
  //     original by: Martijn Wieringa
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //       example 1: strcasecmp('Hello', 'hello')
  //       returns 1: 0

  const string1 = (fString1 + '').toLowerCase()
  const string2 = (fString2 + '').toLowerCase()

  if (string1 > string2) {
    return 1
  } else if (string1 === string2) {
    return 0
  }

  return -1
}

export function strcasecmp(fString1, fString2) {
  //      discuss at: https://locutus.io/php/strcasecmp/
  // parity verified: PHP 8.3
  //     original by: Martijn Wieringa
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //       example 1: strcasecmp('Hello', 'hello')
  //       returns 1: 0

  const string1 = (fString1 + '').toLowerCase()
  const string2 = (fString2 + '').toLowerCase()

  if (string1 > string2) {
    return 1
  } else if (string1 === string2) {
    return 0
  }

  return -1
}

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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