PHP's preg_match in TypeScript

How to use

Install via yarn add locutus and import: import { preg_match } from 'locutus/php/pcre/preg_match'.

Or with CommonJS: const { preg_match } = require('locutus/php/pcre/preg_match')

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	preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "rony@pharaohtools.com")	true
2	preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "ronypharaohtools.com")	false

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

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

Copy code

export function preg_match(regex: string, str: string): boolean {
  // original by: Muhammad Humayun (https://github.com/ronypt)
  //   example 1: preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "rony@pharaohtools.com")
  //   returns 1: true
  //   example 2: preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "ronypharaohtools.com")
  //   returns 2: false
  return new RegExp(regex).test(str)
}

export function preg_match(regex, str) {
  // original by: Muhammad Humayun (https://github.com/ronypt)
  //   example 1: preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "rony@pharaohtools.com")
  //   returns 1: true
  //   example 2: preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$", "ronypharaohtools.com")
  //   returns 2: false
  return new RegExp(regex).test(str)
}

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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