Regular Expressions 101

Order By

Sponsors
There are currently no sponsors. Become a sponsor today!

Community Patterns

1

Belgian license plate regex

ECMAScript (JavaScript)
Regex supporting new old license plates from Belgium but dus not support custom license plates
Submitted by anonymous - a year ago (Last modified a year ago)
1

Match all HTML heading elements and capture their titles

.NET 7.0 (C#)
Useful for matching/finding and capturing/extracting the titles of HTML heading elements. This was used to identify all heading elements within the body of a web page for the purposes of generating a Table of Contents for the page. Note: This expression could be altered for different HTML element ta...
Submitted by Darius Liktorius - a year ago
1

Typographic correction for SI units

ECMAScript (JavaScript)
Matches quantities dimensioned by SI units in typical markdown-formatted plaintext documents. Replaces any spaces or HTML entities between the number and its dimensions with a "narrow non-breaking space" character. This character may fallback to a "thin space" due to its font support. The lexicograp...
Submitted by ecfrechette - a year ago (Last modified a year ago)
1

Dimensioned quantities in markdown, selected units

ECMAScript (JavaScript)
A more general match for numbers with units/dimensions in plaintext. This is unoptimized, a bit rough, and leaves out plenty of units while including some oddities. Use it as the first step to something better if you're linting md files. This was good enough for my use case, which doesn't care much ...
Submitted by ecfrechette - a year ago
1

http search locale

PCRE2 (PHP >=7.3)
search locale in http
Submitted by anonymous - a year ago
1

ActivityWatcher

.NET 7.0 (C#)
sda
Submitted by anonymous - a year ago
1

.*(EXCEL[.]EXE).*(?i)(Maxicredito).*([.]xlsx - Excel)

.NET 7.0 (C#)
.(EXCEL[.]EXE).(?i)(Maxicredito).*([.]xlsx - Excel)
Submitted by anonymous - a year ago
1

French mobile phone numbers

PCRE2 (PHP >=7.3)
French mobile phone numbers
Submitted by anonymous - a year ago
1

Hungarian regular and vanity license plates both from 1990 and 2022 series

PCRE2 (PHP >=7.3)
All regular and vanity Hungarian plates are included from 1990 and from 2022. Special plates (customs, lost, diplomatic and so on), police, ambulance, etc. are not included.
Submitted by gergelyfuzi - a year ago
1

hentialheroes id girl tag

PCRE2 (PHP >=7.3)
reading the id tag from the girl harem html
Submitted by anonymous - a year ago
1

https://shopee.com.my/minhao3313

PCRE2 (PHP >=7.3)
minhao3313
Submitted by anonymous - a year ago
1

check csv content

PCRE2 (PHP >=7.3)
a
Submitted by abc - a year ago
1

Maven Version

PCRE2 (PHP >=7.3)
Based on https://docs.oracle.com/middleware/1212/core/MAVEN/maven_version.htm#A1000661 this validates all maven versions.
Submitted by Baaji Shayeed Shaik - a year ago
1

XC410

PCRE2 (PHP >=7.3)
QS
Submitted by anonymous - a year ago
1

Replace all occurences of a caracter except if placed between "

PCRE2 (PHP >=7.3)
Replace all occurences of the caracter ; except if it placed between two " signs.
Submitted by ccroche helped by ChatGPT - a year ago
1

Connection String Parser

PCRE2 (PHP >=7.3)
Parses connection strings into named groups Key and Value , which can then be handled by whatever programmatic method you like. Ideally handled as key value pairs. I did this in PowerShell using the below: function Resolve-ConnectionString {...
Submitted by rbleattler - a year ago
1

SGML Element (.Net)

PCRE2 (PHP >=7.3)
Parses an SGML . It doesn't account for name groups. See https://sgmljs.net/docs/sgmlrefman.html. Note that the "Flavor" should be .NET as things get a little weird with the # matching.
Submitted by anonymous - a year ago (Last modified a year ago)
1

SGML Element (.Net)

PCRE2 (PHP >=7.3)
Parses an SGML . Doesn't support name groups. Probably imperfect in other ways. Note this is crafted for .Net as things get a little weird with # matching.
Submitted by Scott Bednar - a year ago
1

Tag Extractor for Sonarr V3 Release Profiles

PCRE2 (PHP >=7.3)
Better migrate everything to custom format after updating to Sonarr V4!
Submitted by anonymous - a year ago
1

T Launcher Regex

PCRE2 (PHP >=7.3)
Checks for t launcher
Submitted by anonymous - a year ago (Last modified a year ago)
1...343344345346347...902

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
^([\w.]{1,})\.([\w]{3,4})\.([\w]{3,4})$
/
gm
Open regex in editor

Description

I use this to find files with two or more extensions (i.e. file.txt.txt). This will work with files with 3 or 4 character or numeric (or both) file extensions (i.e. pdf, xlsx).

Submitted by Curve - a year ago (Last modified a year ago)