Regular Expressions 101

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Community Patterns

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

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
5

Separate words (works with spaces, dashes and underscores)

PCRE (PHP <7.3)
no description available
Submitted by marcoslhc - 10 years ago
5

Two or more whitespace

PCRE (PHP <7.3)
Reeplace all two or more whitespace in string with a single chararter(ej. one whitespace)
Submitted by Lanxe - 10 years ago
5

relative to absolute

PCRE (PHP <7.3)
relative to absolute
Submitted by xp_prg - 10 years ago
5

URL

PCRE (PHP <7.3)
URL Description from Dr. M. G. @ Brookes
Submitted by anonymous - 10 years ago
5

parsing CSV file

PCRE (PHP <7.3)
It correctly handles simple values, empty values, and quoted values with commas inside.
Submitted by Viktor Lova aka nsinreal - 10 years ago
5

FIlename sanitization regular expression

PCRE (PHP <7.3)
Useful for filename sanitization. Matches invalid filename characters. Can be used in preg_replace() calls.
Submitted by FractalizeR@yandex.ru - 9 years ago
1...891892893894895...901

Community Library Entry

4

Regular Expression
ECMAScript (JavaScript)

/
^[0-9]{1,3}(?:,?[0-9]{3})*(?:\.[0-9]{1,9})?$
/
gmi
Open regex in editor

Description

no description available

Submitted by anonymous - 9 years ago