Regular Expressions 101

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Community Patterns

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
3

**japanese text** to bold <b>japanese text</b>

PCRE (PHP <7.3)
japanese text to bold japanese text 食べるんだ 食べるんだ
Submitted by kurokuroshii - 4 months ago (Last modified 4 months ago)
4

Strip multi-line (star) comments from JavaScript, while leaving any CDATA sections intact.

PCRE (PHP <7.3)
This regular expression removes multi-line (star) comments from JavaScript, while leaving any CDATA sections intact. Use the global (g) modifier to match them all (if you plan to use PHP's preg_replace, the g modifier is not necessary), and use the (s) modifier to make dots match newlines (this will...
Submitted by Dane MacMillan - 12 years ago
4

For Auto RTFs

PCRE (PHP <7.3)
no description available
Submitted by Dan Bloomquist - 12 years ago
4

Strip out domain extensions except for Microsoft .net technologies.

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 12 years ago
4

1st TSV

PCRE (PHP <7.3)
no description available
Submitted by DynV - 12 years ago
4

Prime number regex

PCRE (PHP <7.3)
no description available
Submitted by originally "Abigail", comp.lang.perl.misc - 11 years ago
4

Get stuff inside <a> tags

PCRE (PHP <7.3)
Get stuff inside tags, which are between certain words
Submitted by Jerry - 11 years ago
4

YouTube Grabber Cleanup

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
4

Match Brackets and anything inside

ECMAScript (JavaScript)
no description available
Submitted by andreayang - 11 years ago
4

Task 1

PCRE (PHP <7.3)
Finds a happy smile, except sad one
Submitted by Kovalev Evgeny - 11 years ago
4

Hungarian ANDOK system id

PCRE (PHP <7.3)
no description available
Submitted by Tana - 11 years ago
4

outer Parentheses

PCRE (PHP <7.3)
Finds the outermost pair of parentheses. Compatible with any amount of nesting
Submitted by Jonas Gerneth - 11 years ago
4

REGEX to parse IIS7 Log File into FluentD

PCRE (PHP <7.3)
This regex parses the entire line of the IIS log files (without detail on the AgentID) for usage into FluentD. Q&C - juan.carniglia@gmail.com
Submitted by Juan Carniglia - 11 years ago
4

Repeated words (JS)

ECMAScript (JavaScript)
no description available
Submitted by paconaranjo - 11 years ago
4

Element's Attribute Value in XML (simple)

PCRE (PHP <7.3)
Simple regular expression for extracting attribute value of the element in XML-string. Attribute value should be in quotes.
Submitted by Nikita Danilov - 10 years ago
4

Command handling

PCRE (PHP <7.3)
Handles commands like in CMD
Submitted by anonymous - 10 years ago
4

Remove HTML tags

PCRE (PHP <7.3)
This regex is used to remove HTML tag on string
Submitted by Jordane BACHELET - 10 years ago
1...888889890891892...902

Community Library Entry

0

Regular Expression
.NET 7.0 (C#)

@"
^(?=(?<http>(?:https?:\/\/){1}(?:www\.)?)?)(?(?=\k<http>?(?<ipaddr>(?:\d{1,3}\.){3}\d{1,3}(?:\:\d{1,5})?))\k<http>?\k<ipaddr>(?:\.[\w]{1,9})?|\k<http>(?:[\w]\.?){1,255}\.[\w]{1,9})(?:\/.*)?$
"
gm
Open regex in editor

Description

Can be used to validate on URL's.

Submitted by anonymous - 2 years ago