Inspired by Micheal Musson entry Wich was hard to use in regex flavours that don't support recursion (C# engine doesn't) i've build my own simpler version wich matches what i would accept as validation entry

Test on the most basic possible form of credit card numbers.

Separation of bank statement description``

ul li discovered

Saudi Postal Code has five digits, if you would to have more information check the below: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ First Digit (Postal Regions): "The postal region number is represented by the first digit of the postal code" ...

Regular expression for phone numbers validation that formatted with mukeshsoni/country-telephone-data

Does what it says on the tin.

By Lynda.com

This Regex will help to match any first & last name from paragraph as one line, if you would to do the matching based on multi lines, add "gm" in the last of this query. /([A-Za-z0-9]\w+\s\w+)+/gm

match nested quotes

Check a day of month value (match with integer value between 1 and 31).

Four examples of word wrapping at the 80 character mark, each one taking fewer steps than the last. Comment and uncomment lines with # to see the difference between versions. Optimization discussions welcome!