Regular Expressions 101

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Community Patterns

1

URL Validation

PCRE2 (PHP >=7.3)
clickthistoget.com
Submitted by anonymous - 3 months ago
1

IPv4 Address Validation

PCRE2 (PHP >=7.3)
wttmforums.com
Submitted by anonymous - 3 months ago
1

Email Validation with TLD Restriction:

PCRE2 (PHP >=7.3)
elegenttech.com
Submitted by anonymous - 3 months ago
1

Inverse attribute search on elements/components

PCRE2 (PHP >=7.3)
Finds elements/components without a specific prop/attribute
Submitted by anonymous - 3 months ago
1

RFC3339 Validator

PCRE (PHP <7.3)
RFC3339 Validator
Submitted by anonymous - 3 months ago (Last modified 3 months ago)
1

Expression for calculator`s memory

PCRE2 (PHP >=7.3)
variable should be only letters = variable almost in the memory or the value including negative
Submitted by Breathe of fate - 3 months ago
1

.NET CSV parser

.NET 7.0 (C#)
Parses CSV files using comma (,) as delimiter and double quote (") as quoted-field tag. Features: Respects empty fields, including at the beginning and at the end of the line Respects line breaks in quoted fields
Submitted by kevinhp - 3 months ago
1

ORCID iD

Python
The ORCID ID (16-digit identifiers) format checker. Reference: Format of the ORCID iD
Submitted by Ken Lui - 4 months ago
1

Operations between integers

PCRE2 (PHP >=7.3)
Detect operations between integers (12^-3) and split them into three capture groups: lhs: 12 op : ^ rhs: -3 `
Submitted by benetsugarboy - 4 months ago
1

IP address without local

.NET 7.0 (C#)
Matches IP addresses excluding local addresses
Submitted by pvl_zh - 4 months ago
1

для haproxy kuma

PCRE2 (PHP >=7.3)
начало
Submitted by anonymous - 4 months ago
1

snake_case

PCRE2 (PHP >=7.3)
snake_case
Submitted by Groupe 18 - 4 months ago (Last modified 4 months ago)
1

Catch domains

Python
Catch domains from str. Details see TEST STRING
Submitted by Casey TSui - 4 months ago
1

1 lower 1 upper 1 special char, 8 to 18 chars...

PCRE2 (PHP >=7.3)
1 lower 1 upper 1 special char, 8 to 18 chars...
Submitted by anonymous - 4 months ago
1

HTML attributes

ECMAScript (JavaScript)
Find specific HTML attributes
Submitted by Joseph R. - 4 months ago
1

CSS Selectors

PCRE2 (PHP >=7.3)
Captures CSS Selectors along with combinators
Submitted by Joseph R - 4 months ago
1

Minecraft whisper commands

PCRE2 (PHP >=7.3)
This regex lets you extract all the uses of the whisper command in Minecraft log files.
Submitted by anonymous - 4 months ago
1

Extract Grasemonkey userscript metadata

PCRE2 (PHP >=7.3)
This regex uses groups to extract metadata from Grasemonkey/Tampermonky user scripts.
Submitted by pikapower9080 - 4 months ago
1

Fonction.Code

PCRE2 (PHP >=7.3)
Fonction.Code
Submitted by Groupe 18 - 4 months ago (Last modified 4 months ago)
1

NIR Sécurité Sociale en France

PCRE2 (PHP >=7.3)
Cette regex est un fork de celle-ci permettant de valider un numéro de sécurité sociale français et prenant en compte les cas spécifiques définis sur cette page Wikipedia
Submitted by Nicolas Jourdain - 4 months ago (Last modified 4 months ago)
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Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
^(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/?|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:(?:0?2)(\/?|-|\.)(?:29)\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\/?|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$
/
gm
Open regex in editor

Description

Date Validation with leap year handling, & it takes care of date validation in the format like :mm/dd/yyyy or mmddyyyy or mm-dd-yyyy or m/d/yyyy or m-d-yyyy.

12/01/1986 02/29/2016 02/29/2015 13/31/1986 12/31/1980 1/32/2015 1/31/2015

01012016 01/01/2016 1/1/2016 1/1/16 01/01/16 01-01-2016 1-1-2016 1-1-16 01-01-16

Submitted by Ashish - 9 years ago