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

Jul 8, 2025 · For example, [^abc] is the same as [^a-c]. They initially match "o" in "bacon" and "h" in "chop". Note: The ^ character may also indicate the beginning of input. Wildcard: Matches …

Jul 10, 2011 · Yes, you are correct - [ab] and (a|b) both match exactly the same thing (but the first one will match faster).

Jan 5, 2025 · A quick start regex cheat sheet reference guide for regular expressions, including regex syntax, symbols, ranges, grouping, assertions, Unicode handling, and some practical …

Menu 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 …

Regular expressions or commonly called as Regex or Regexp is technically a string (a combination of alphabets, numbers and special characters) of text which helps in extracting …

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

Regular expressions are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical …

Apr 12, 2024 · Start by understanding the special characters used in regex, such as ".", "*", "+", "?", and more. Choose a programming language or tool that supports regex, such as Python, …

May 7, 2023 · Regex, or regular expressions, is a powerful tool for text manipulation, but it can also be overwhelming and confusing. That's why we've compiled the ultimate regex cheat …