Regular Expressions 101

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Community Patterns

1

Simple CSS Selector parser

ECMAScript (JavaScript)
Basic Regex for CSS Selector. Pseudo-Elements, Combinators and other advanced stuff are not supported.
Submitted by anonymous - 8 days ago (Last modified 8 days ago)
1

HP Prime

PCRE2 (PHP >=7.3)
Extracts HP Prime PPL numbers.
Submitted by anonymous - 9 days ago (Last modified 9 days ago)
1

Strings

PCRE2 (PHP >=7.3)
Extracting strings defined in languages like C/C++ etc.
Submitted by Insoft - 9 days ago (Last modified 9 days ago)
1

1

Python
554
Submitted by anonymous - 11 days ago
1

U.S. Phone Number

PCRE2 (PHP >=7.3)
Format validation for U.S. phone numbers with or without a country code and with various formatting and punctuation permissible.
Submitted by Nick - 15 days ago
1

AoC 2025 Day 5

Python
AoC 2025 Day 5 part 1 but also works for part 2. You just don't need the IDs at the bottom for part 2
Submitted by anonymous - 19 days ago
1

Telephone validation regex - handles international codes, extensions, and formatting gracefully

PCRE2 (PHP >=7.3)
Search string for use in contact cleaning project $1 = intenational code, omitting preceding "+" $2 = area code $3 = first three digits of phone number $4 = last four digits of phone $5 = extension, inclusive of any commas or hashes to automate phone tree navigation...
Submitted by Jason - 19 days ago
1

Changes Log Tag verify for Languages Code sub-versioning

PCRE2 (PHP >=7.3)
Search for the occurence of the 3 following words: CHA, LOG and TAG. Should be in the above order sequence (but it also if works swapped).
Submitted by XrosaXasorX - 21 days ago
1

Asw

PCRE (PHP <7.3)
``/^(?P0|1-9]\d)\.(?P0|[1-9]\d)\.(?P0|[1-9]\d)(?:-(?P(?:0|[1-9]\d|\d[a-zA-Z-)(?:\.(?:0|1-9]\d|\d[a-zA-Z-))))?(?:\+(?P[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/gmsAD
Submitted by anonymous - 22 days ago
1

DoubleQuote Enclosed CSV Field with Escaped DoubleQuote

PCRE2 (PHP >=7.3)
Extract field value of DoubleQuote Enclosed CSV Field with Escaped DoubleQuote The matching field value still contains escaped double quotes to be later processed :-)
Submitted by Alper YAZGAN - a month ago
1

test

PCRE2 (PHP >=7.3)
test
Submitted by anonymous - a month ago
1

Text in between HTML tags and inside quotation marks within HTML tags

ECMAScript (JavaScript)
Overview This Regular Expression shows any text between HTML tags or between quotation marks within the tags themselves. An example would be: <HTML lang="en", then selecting the 'en' from there. Group 1 is between tags, and group 2 is in the quotes. I recommend only using half of this regular expres...
Submitted by daniel@sabian.pro - a month ago
1

Deucesanother

PCRE (PHP <7.3)
Fixwithpecra
Submitted by Deuces9ers - a month ago
1

001

PCRE2 (PHP >=7.3)
for Problem 2 - Fancy Barcodes
Submitted by anonymous - a month ago
1

Regex for MusicBrainz Picard Plugin – Title Cleaner OST

Python
One of the regular expressions I use for my plugin Title Cleaner OST.
Submitted by nrth3rnlb - a month ago (Last modified a month ago)
1

souly2

PCRE2 (PHP >=7.3)
import React, { useState } from 'react'; // Example characters array as props for demonstration const charactersData = [ { name: 'Gandalf', isWizard: true }, { name: 'Harry', isWizard: true },...
Submitted by anonymous - a month ago
1

souly

PCRE2 (PHP >=7.3)
für julian <3
Submitted by anonymous - a month ago
1

zweckfreibaum

PCRE2 (PHP >=7.3)
d
Submitted by anonymous - a month ago
1

zweckfreibaum08

PCRE2 (PHP >=7.3)
08
Submitted by anonymous - a month ago
1

Zwechfreibaum

PCRE2 (PHP >=7.3)
Leben
Submitted by anonymous - a month ago
123...914