Regular expressions (regex) are powerful pattern-matching tools. Master them to unlock advanced text processing capabilities.

Basic Metacharacters

• . - Any character
• \d - Any digit
• \w - Any word character
• \s - Whitespace

Anchors

• ^ - Start of string
• $ - End of string

Quantifiers

• * - Zero or more
• + - One or more
• ? - Zero or one
• {n} - Exactly n times

Practical Examples

Email: ^[\w.-]+@[\w.-]+\.\w+$

Phone: \d{3}[-.]?\d{3}[-.]?\d{4}

Conclusion

Practice makes perfect. Use our regex tester to experiment!