Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Supports JavaScript & PHP/PCRE RegEx. Results update in real-time as you type. Roll over a match or …

Apr 12, 2024 · A regular expression (regex) is a sequence of characters that define a search pattern. Here's how to write regular expressions: Start by understanding the special characters …

Oct 28, 2024 · This page provides an overall cheat sheet of all the capabilities of RegExp syntax by aggregating the content of the articles in the RegExp guide. If you need more information …

Jun 18, 2022 · In this quick reference, learn to use regular expression patterns to match input text. A pattern has one or more character literals, operators, or constructs.

If you are a complete beginner, you should get a firm grasp of basic regex syntax just by reading the examples in the tables. I tried to introduce features in a logical order and to keep out …

5 days ago · A regular expression (regex or regexp for short) is a special text string for describing a search pattern. You can think of regular expressions as wildcards on steroids. You are …

Jan 5, 2025 · Regular expressions (regex) are powerful tools for text matching and manipulation. This regex cheat sheet is a quick start regex tutorial, helping you understand regex patterns, …

Apr 14, 2022 · A Regular Expression – or regex for short– is a syntax that allows you to match strings with specific patterns. Think of it as a suped-up text search shortcut, but a regular …

A tool to generate simple regular expressions from sample text. Enable less experienced developers to create regex smoothly.