Regular Expressions 101

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Community Patterns

4

Date yyyy/mm/dd

PCRE (PHP <7.3)
Regex following "ISO 8601" without hour : allowing only month 1 to 12, the day of 1 to 31 for the months of 31 days, the months from 1 to 30 for the months of 30 days, the day of 1 to 28 for February, and the day from 1 to 29 for February of leap years
Submitted by Sara DULMAR - 9 years ago
4

Get image tag attributes

PCRE (PHP <7.3)
no description available
Submitted by Agustín Bouillet - 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

Campos Decimais (pt_br)

ECMAScript (JavaScript)
Funciona para campos decimais para moeda nacional brasileira. Aceita números inteiros, separação por milhar e a separação decimal.
Submitted by Murilo C. Cumerlatto - 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

BEST simple mail regex validator

ECMAScript (JavaScript)
VALIDATE ALL WOLRD MAIL RULES Very simple expression Less than 140 caracters. Validate on SonarQube typescript, javascript, angular rules ...
Submitted by Ayslan Johnson (ayslanjohnson@gmail.com) - 7 years ago
4

among us references

ECMAScript (JavaScript)
it detects among us references among us aming us mongus amogus sus...
Submitted by h - 4 years ago (Last modified 4 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
4

C# Regex Extract/Match Nested HTML Elements/Tags

.NET 7.0 (C#)
With this C# regex, you can easily match/Parse Nested HTML tags. Example input: ...
Submitted by w4po - 3 years ago (Last modified a year ago)
5

Hello world !

ECMAScript (JavaScript)
no description available
Submitted by Fedir RYKHTIK - 11 years ago
5

Youtube ID matcher

ECMAScript (JavaScript)
Credit: https://gist.github.com/FinalAngel/1876898
Submitted by anonymous - 11 years ago
5

All href in a tag

PCRE (PHP <7.3)
Find all href in a tag
Submitted by Miron Yanovskiy - 11 years ago
5

Accept url without www

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
5

RegEx to validate oAuth 2.0 redirect_uri

ECMAScript (JavaScript)
A simple RegEx rule which should validate redirect_uri for oAuth2
Submitted by Vlad Miller - 10 years ago
5

Find All Python imports

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
1...890891892893894...900

Community Library Entry

4

Regular Expression
PCRE (PHP <7.3)

/
(^( +|)\[(?<name>[^#;\r\n]+)\])|(^( +|)(?<key>[^\[\]\r\n=#;]+)( |)=( |)(?<value>[^#;\\\r\n]*(?:\\.[^#;\\\r\n]*)*))|((#|;)(?<comm>.+)$)
/
gm
Open regex in editor

Description

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
k    - Key
v    - Value
kvcp - KeyValue Comment Prefix
kvc  - KeyValue Comment
cp   - Comment Prefix
c    - Comment

I am open to any suggestion that may improve upon this regex, and/or would allow me to learn more. <br />

Created by Raxdiam
Submitted by Raxdiam - 5 years ago