Regular Expressions 101

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Community Patterns

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
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

MAC address

ECMAScript (JavaScript)
a mac address separated by dashes or colons.
Submitted by anonymous - 9 years ago
5

Latitude,Longitude fetcher

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

youtube url match

ECMAScript (JavaScript)
extract video id, index, play list id from youtube URL
Submitted by anonymous - 9 years ago
5

Password strength

ECMAScript (JavaScript)
Regular expression for password validation Rules: 8-120 chars no spaces must contain at least one a-z char must contain at least one A-Z char...
Submitted by @razvanz - 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...892893894895896...902

Community Library Entry

0

Regular Expression
ECMAScript (JavaScript)

/
^P(\d+([,\.]\d+)?Y)?(\d+([,\.]\d+)?M)?(\d+([,\.]\d+)?D)?(T(\d+([,\.]\d+)?H)?(\d+([,\.]\d+)?M)?(\d+([,\.]\d+)?S)?)?$
/
gm
Open regex in editor

Description

no description available

Submitted by anonymous - 6 years ago