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

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 …

6 日前 · 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 on a …

2025年12月22日 · A regular expression (regex) is a sequence of characters that defines a search pattern. It is mainly used for pattern matching in strings, such as finding, replacing, or validating …

5 日前 · You can use this table if you’ve seen some syntax in somebody else’s regex and you have no idea what feature that syntax is for. Follow the link to learn more about the syntax in the …

1 日前 · Regular expressions can be concatenated to form new regular expressions; if A and B are both regular expressions, then AB is also a regular expression. In general, if a string p matches …

Regular Expressions, abbreviated as Regex or Regexp, are a string of characters created within the framework of Regex syntax rules. You can easily manage your data with Regex, which uses …

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 …

Learn Regular Expressions with simple, interactive exercises. Regular expressions are extremely useful in extracting information from text such as code, log files, spreadsheets, or even …

Here is a quick tutorial for you to learn regular expressions, you can see the details about each individual topic also.