Practical scenarios for using regular expressions

Popular use cases for Regex

Validation of email addresses

Checking email format is one of the most common tasks. The basic pattern covers most cases.

Parsing server logs

Regular expressions allow you to extract IP addresses, timestamps, response codes and request URLs from logs.

Find and replace in code

Extracting data from HTML

Although it is better to use specialized libraries for HTML parsing, regex is suitable for simple tasks.

Handling user input

Working with CSV files

Regex helps parse CSV strings by taking into account quotes and escaping.

See also: HTML Formatter, Diff Checker, JSON Formatter