Introduction

This is a quick cheat sheet to getting started with regular expressions.

• Regex in Python (quickref.me)
• Regex in JavaScript (quickref.me)
• Regex in PHP (quickref.me)
• Regex in Java (quickref.me)
• Regex in MySQL (quickref.me)
• Regex in Vim (quickref.me)
• Regex in Emacs (quickref.me)
• Online regex tester (regex101.com)