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

A quick reference for regular expressions (regex), including symbols, ranges, grouping, assertions and some sa

Jul 8, 2025 · Non-word character class escape: Matches any character that is not a word character from the basic Latin alphabet. Equivalent to [^A-Za-z0-9_]. For example, /\W/ or /[^A …

Nov 12, 2009 · Note that ^ and $ match the beginning and the end of a line. When multiline is enabled, this can mean that one line matches, but not the complete string. Use \A for the …

Apr 12, 2024 · Here's how to write regular expressions: Start by understanding the special characters used in regex, such as ".", "*", "+", "?", and more. Choose a programming language …

This cheatsheet provides a comprehensive and practical reference for regular expressions. It covers character classes, anchors, quantifiers, groups, common patterns, command combos, …

This free regular expression tester lets you test your regular expressions against any entry of your choice and clearly highlights all matches. It is JavaScript based and uses XRegExp library for …

Oct 2, 2024 · A phone number regex pattern must include country code but does not have to extract that part even though it must match on string. [] matches specified single character, …

Dec 8, 2024 · Hi Everyone, We know regular expressions can be tricky to read and write. I prepared this Regular expression cheatsheet with the help of various resources. I hope this …

Jun 1, 2025 · Regular expressions are a powerful tool for finding and replacing text in a program, or at the command line. This page describes the most common regular expression symbols, …