Regular Expression Tester & Validator

Quick Regex Syntax Guide:

• ^ - Start of string
• $ - End of string
• . - Any character except newline
• [abc] - Any of a, b, or c
• [a-z] - Any lowercase letter
• \d - Any digit
• \w - Any word character (alphanumeric + _)
• * - Zero or more of previous
• + - One or more of previous
• {n} - Exactly n of previous