Regular Expressions 101

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Community Patterns

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 - 9 years ago
4

Validates argentinian postal code

PCRE (PHP <7.3)
Validates the two valid postal codes in Argentina
Submitted by Agustín Bouillet - 9 years ago
4

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

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 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

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

All href in a tag

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

Numeric values greater than zero with decimal

PCRE (PHP <7.3)
Pattern that only accept numeric value and greater than zero with up to decimal places( you can change the decimal places just replace {1,2} depend on how many decimal places you like
Submitted by Eugene To - 9 years ago
5

Latitude,Longitude fetcher

PCRE (PHP <7.3)
Useful to work with GoogleMap API.
Submitted by anonymous - 9 years ago
5

ipv6 Validation

PCRE (PHP <7.3)
Handle all condition for ipv6 example: 1) FE80::8329 2) FE80::FFFF:8329 3) FE80::B3FF:FFFF:8329 4) FE80::0202:B3FF:FFFF:8329...
Submitted by Lim Yew Teck, Nicholas - 9 years ago
5

Variable name of code

PCRE (PHP <7.3)
To get a variable name from a source code: The variable name is before the '=' (equal sign) This is the way to detect. Problem: Only 1 variable can get from 1 line. Unfortunately, this can get variable between after "//" and before ";" too. I made this for fake script debugger. Just get variable f...
Submitted by Setsuna - 9 years ago
1...575576577578579...582

Community Library Entry

52

Regular Expression
PCRE (PHP <7.3)

/
^(?'Username'[-\w\d\.]+?)(?:\s+at\s+|\s*@\s*|\s*(?:[\[\]@]){3}\s*)(?'Domain'[-\w\d\.]*?)\s*(?:dot|\.|(?:[\[\]dot\.]){3,5})\s*(?'TLD'\w+)$
/
gm
Open regex in editor

Description

Matches distorted email addresses and converts them back to real ones.

Submitted by dislick - 12 years ago