Regular Expressions 101

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Community Patterns

3

camelCase2snake_case

PCRE2 (PHP >=7.3)
Convert camelCase to snake_case def camelCase2snake_case(txt): """ Convert camelCase to snake_case https://regex101.com/library/wUcSv4...
Submitted by JV-conseil - 2 years ago
3

Discord ID:NAME#DISCRIM match

PCRE2 (PHP >=7.3)
For example, using `Carl-bot to dump members of the @everyone role ordering highest of id`: `!dump @everyone %i:%u -o id` Example of return: 498984530968051713:lanjt#2129 ......
Submitted by lanjt - 4 years ago
3

mega.nz files and folders

PCRE2 (PHP >=7.3)
Regex for matching https://mega.nz file and folder URLs. https://github.com/tonikelope/megabasterd/issues/215
Submitted by anonymous - 4 years ago
3

example

PCRE2 (PHP >=7.3)
example
Submitted by anonymous - 3 years ago
3

Extract URL parts only named capturing groups

Golang
Extract URL parts only named capturing groups
Submitted by dixanms - 3 years ago
3

Match any layer bracket pair (.NET)

.NET 7.0 (C#)
Match any layer bracket pair
Submitted by Yakumo Yukari - 3 years ago
3

Remove extra/useless python elements for GPT input.

PCRE2 (PHP >=7.3)
This RegEx removes unused elements such as inline comments and blank lines in python code. This will save you tokens and time when using GPT-3+ or ChatGPT to help code and debug.
Submitted by LukeL - 2 years ago (Last modified 2 years ago)
3

Caltrans EA validation with optional XX-XXXXXX entry and C##-#????#

.NET 7.0 (C#)
Checks validity of an EA number first two digits 01-12 followed by hyphen then a number from 0-4 and then 4 numbers or uppercase letters and ending in a 1 or 4 for example "05-1J7601". Adding a capital C to the beginning is also accepted "C05-1J7601", along with the entry of 2 X's hyphen and 6 X's ...
Submitted by RDJ@Ct - 2 years ago (Last modified 2 years ago)
3

Placeholder resolving

.NET 7.0 (C#)
.Net regular expression for resolving placeholders in the format of ${rewriter(multilevel:key)?fallback} (+ variations)
Submitted by anonymous - a year ago
4

Complete imgur link regex

Python
This regex grabs all kinds of imgur links and groups them in meaningful names aswell. This way you have full flow-control in your python-scripts.
Submitted by Mio - 10 years ago
4

Equation matching (without equal)

Python
use this to get value of any side of an equation. You can combine this with https://regex101.com/r/fH5kJ1/1
Submitted by Kerosene2000 - 10 years ago
4

CloudFlare

PCRE2 (PHP >=7.3)
Cloud Flare
Submitted by anonymous - 4 years ago
4

Email

PCRE2 (PHP >=7.3)
email format control
Submitted by ahmetbarut - 4 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

import url image

Python
import url image
Submitted by bartimeys - 9 years ago
5

Form Tag

Python
Form Tag
Submitted by Jay Patel - 9 years ago
5

psswd

Python
no description available
Submitted by anonymous - 9 years ago
5

Bible reference extractor

Python
For scraping http://skepticsannotatedbible.com/
Submitted by antaytheist-owner - 9 years ago
5

Match Only Text

Python
no description available
Submitted by anonymous - 9 years ago
5

Match any url in text or html (http, https)

PCRE2 (PHP >=7.3)
Match any url in text or html (http, https)
Submitted by Jérémy Munsch - 3 years ago
1...256257258259

Community Library Entry

12

Regular Expression
Python

r"
(^https?://)?(\w+)?\.?(reddit\.com/|redd\.it/)(r/\w+/)?(comments/)?(\w+)
"
gm
Open regex in editor

Description

Simply searches for the thread-id in any kind of valid reddit-URL.

Submitted by Mio - 10 years ago