Regular Expressions 101

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Community Patterns

4

Match nth occurence of pattern

PCRE (PHP <7.3)
Match nth occurence of the patterns in the inner parenthesis. Put nth that you want to match in the curly braces (here, {3}).
Submitted by Alex Hall - 10 years ago
4

Credit Card Number

PCRE (PHP <7.3)
Validates Credit Card Numbers of different type. Supports Visa, MasterCard, American Express, Diners Club, Discover and JCB Taken from http://www.regular-expressions.info/creditcard.html If you want to support only a particular type, customise it based on following....
Submitted by Ehsan - 10 years ago
4

IPV4 address validation using recursion

PCRE (PHP <7.3)
Validate IPv4 addresses using PCRE's recursion patterns. A shorter but less efficient alternative to https://regex101.com/r/wZ6oY5/1
Submitted by Captain Haddock - 10 years ago
4

Phone number

PCRE (PHP <7.3)
no description available
Submitted by Mark Landry - 10 years ago
4

match brackets outside quotes

ECMAScript (JavaScript)
no description available
Submitted by Jerry - 9 years ago
4

Equation matching (without equal)

Python
use this to get value of any side of an equation. You can combine this with https://regex101.com/r/fH5kJ1/1
Submitted by Kerosene2000 - 9 years ago
4

Roman numeral detector

PCRE (PHP <7.3)
Detects valid Roman numerals (up to 3999), and splits into 4 capture groups: thousands, hundreds, tens, and units.
Submitted by Terence Linnell - 9 years ago
4

url

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
4

Epic EHR Sticker QR code patient information

PCRE (PHP <7.3)
Text output produced by reading the QR code present on patient stickers created by Epic (R) medical record software
Submitted by MeWa - 9 years ago
4

Full e-mail validator

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
4

TV series season and episode names

PCRE (PHP <7.3)
This regex matches against season and series names
Submitted by mikey - 9 years ago
4

Find Lat/Long Coordinate pair regex

ECMAScript (JavaScript)
no description available
Submitted by Mike - 9 years ago
4

Typescript - /// <reference path="..."/> Expression

ECMAScript (JavaScript)
Finds Typescript's reference path syntax.
Submitted by Lovelidge, Shawn - 9 years ago
4

tgs data delivery .zip ID

PCRE (PHP <7.3)
Pull zip download ID from default links. Works with datadelivery and datadelivery1
Submitted by TRL - 9 years ago
4

Remove common numeric suffixes (eg: 40m, 60%)

PCRE (PHP <7.3)
Usage: "40%".replace(/\b([\d\.]+)mkb%/ig, '$1')
Submitted by anonymous - 9 years ago
4

Currency Formater Accept , & .

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
4

Mobile phone russia

ECMAScript (JavaScript)
Submitted by Johhny - 9 years ago
4

Validate hex color

PCRE (PHP <7.3)
Validates hexadecimal color codes based on the following rule set: Optionally starting with a hash. 3 or 6 characters in length. Using the [0-9a-f] character set.
Submitted by Nathaniel Blackburn - 9 years ago
4

Jeff Test

PCRE (PHP <7.3)
Valid and Invalid emails
Submitted by anonymous - 9 years ago
4

vowel words

ECMAScript (JavaScript)
([!-\~]aeiou)
Submitted by Ipsita Mohanty - 9 years ago
1...890891892893894...902

Community Library Entry

4

Regular Expression
ECMAScript (JavaScript)

/
\(?(?:(http|https):\/\/)(?:((?:[^\W\s]|\.|-|[:]{1})+)@{1})?((?:www.)?(?:[^\W\s]|\.|-)+[\.][^\W\s]{2,4}|localhost(?=\/)|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})(?::(\d*))?([\/]?[^\s\?]*[\/]{1})*(?:\/?([^\s\n\?\[\]\{\}\#]*(?:(?=\.)){1}|[^\s\n\?\[\]\{\}\.\#]*)?([\.]{1}[^\s\?\#]*)?)?(?:\?{1}([^\s\n\#\[\]]*))?([\#][^\s\n]*)?\)?
/
Open regex in editor

Description

no description available

Submitted by anonymous - 9 years ago