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.

A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2] [3] is a sequence of characters that specifies a match pattern in text. Usually …

Oct 28, 2024 · Character class: Matches any one of the enclosed characters. You can specify a range of characters by using a hyphen, but if the hyphen appears as the first or last character …

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 …

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 …

May 7, 2023 · With the ultimate regex cheat sheet, you now have a comprehensive guide to regex syntax, quantifiers, character classes, and advanced techniques. Remember to use online …

6 days ago · The regex equivalent is ^. * \. txt $. But you can do much more with regular expressions. In a text editor like EditPad Pro or a specialized text processing tool like …

Mar 26, 2025 · OpenRegex is a self-hosted, open-source web application designed for testing and debugging regular expressions (regex). It supports multiple engines, including Python (re, …

Learn regex online with examples and tutorials on RegexLearn now. With RegexLearn Cheatsheet, you can see all of the usages you need at once and check them directly from the …