Regular Expressions 101

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Community Patterns

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

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

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

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

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

import url image

Python
import url image
Submitted by bartimeys - 9 years ago
4

JWT Validation

PCRE (PHP <7.3)
Validate a Json Web Token (JWT).
Submitted by Erik Maas - 9 years ago
4

kenteken validator

PCRE (PHP <7.3)
validator voor kenteken vb: 11-AA-BB
Submitted by Senne Root - 9 years ago
4

Version Matcher

PCRE (PHP <7.3)
Matches version strings.
Submitted by anmols - 9 years ago
4

DNS hostname well-formedness validation

PCRE (PHP <7.3)
Validates that a DNS hostname is well-formed only. You will still need to check that the overall length of the hostname, including the implied trailing "." (if not present), does not exceed 255 bytes.
Submitted by Jeff Walter - 9 years ago
4

MasterCard validate 2017

PCRE (PHP <7.3)
Match a MasterCard with new range for 2017: 51-55 and 2221-2720 @incarnated
Submitted by John C - 9 years ago
4

Validate Argentinian postal code

PCRE (PHP <7.3)
Validates CPA (Código Postal Argentino, spanish for Argentinian Postal Code).
Submitted by Agustín Bouillet - 8 years ago
4

Validates argentinian postal code

PCRE (PHP <7.3)
Validates the two valid postal codes in Argentina
Submitted by Agustín Bouillet - 8 years ago
4

,(?=([^\"]*\"[^\"]*\")*(?![^\"]*\"))

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
4

remove blank keys in query string

PCRE (PHP <7.3)
looks for blank keys in the query string and remove it, in order to make shorter request.
Submitted by M.Nizam - 8 years ago
4

Credit Card Validation - MasterCard, Visa, Amex, Discover

PCRE (PHP <7.3)
MasterCard - ^5[1-5]\d+ Visa - ^4\d+ Amex - ^3[47]\d+ Discover - 6011|65|64...
Submitted by Eric Foster - 8 years ago
4

INI Parser

PCRE (PHP <7.3)
Created for purpose of reading an INI file in C# applications. Supports comments and comment escape characters. I plan to add more escape characters (such as \=). s - Section scp - Section Comment Prefix sc - Section Comment...
Submitted by Raxdiam - 5 years ago
4

CloudFlare

PCRE2 (PHP >=7.3)
Cloud Flare
Submitted by anonymous - 3 years ago
4

Email

PCRE2 (PHP >=7.3)
email format control
Submitted by ahmetbarut - 3 years ago
123456...712

Community Library Entry

4

Regular Expression
PCRE (PHP <7.3)

/
(\w+=[\w]{0})(?:&|$)
/
g
Open regex in editor

Description

looks for blank keys in the query string and remove it, in order to make shorter request.

Submitted by M.Nizam - 8 years ago