regexone provides a set of interactive lessons and exercises to help you learn regular expressions

RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).

regular expressions tutorial. comprehensive resource covering basic to advanced uses of regex. includes regex cheat sheet, tools, books and tricks.

Stack Overflow | The World’s Largest Online Community for Developers

Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

PHP is a popular general-purpose scripting language that powers everything from your blog to the most popular websites in the world.

Formulas HQ is your go to AI-powered Tool for formula generation in Google Sheets and Microsoft Excel. Generate Regex, VBA, and App Script too!

a community committed to sharing perl knowledge and coding tips. the site contains questions and answers, useful snippets, and a library of code.

chatgpt resources and news. learn how artificial intelligence is changing the world, and use ai chat bots to discover what you can do with them.