Regular Expressions 101

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Community Patterns

2

yyyy/mm/dd

Java 8
^(((\d{3}[1-9]|\d{2}[1-9]\d|\d[1-9]\d{2}|[1-9]\d{3})(\/)(((0[13578]|1[02])(\/)(0[1-9]|[12]\d|3[01]))|((0[469]|11)(\/)(0[1-9]|[12]\d|30))|(02(\/)(0[1-9]|[1]\d|2[0-8]))))|(((\d{2})(0[48]|2468|13579)|((0[48]|2468|3579)00))(\/)02(\/)29))$ Match year/month/day, date format. E.g: 2021/08/25 [match] 2021/...
Submitted by mayl0421 - 3 years ago
2

Html tag parser

PCRE2 (PHP >=7.3)
This regex will help you to parse html tag. Example ...
Submitted by denchiklut - 3 years ago
2

JavaScript semicolon adder

ECMAScript (JavaScript)
This is a regex to use on JavaScript code that is missing semicolons
Submitted by samunemeth - 3 years ago
2

Check Phone numbers

PCRE2 (PHP >=7.3)
Other patterns
Submitted by https://joserobinson.com - 3 years ago
2

Match Javanese Script Syllable

PCRE2 (PHP >=7.3)
Match any syllable based on javanese script unicode
Submitted by anonymous - 3 years ago (Last modified 3 years ago)
2

RFC1918 - Private IPv4 addresses

PCRE2 (PHP >=7.3)
Validate a given IP v4 address against all three defined Private IPv4 Subnets as statet in RFC1918 10.0.0.0/8 172.16.0.0/20 192.168.0.0/16 ...
Submitted by 0100101101001 - 3 years ago
2

Get commands from Neebula Discovery Language NDL

ECMAScript (JavaScript)
Matches the commands from Neebula Discovery Language NDL, which is used in ServiceNow Discovery Patterns.
Submitted by James Griffith - 3 years ago (Last modified 3 years ago)
2

Grabify URL Detector

PCRE2 (PHP >=7.3)
Detects any Grabify IP tracker links
Submitted by ShadowNox - 3 years ago
2

UUID 4

PCRE2 (PHP >=7.3)
Detects any UUID 4 strings
Submitted by ShadowNox - 3 years ago
2

CSS Colors: RGB(A), HSL(A), HEX(3,4,6,8), var(--tw-color), etc...

ECMAScript (JavaScript)
Versatile, multiline matching of CSS colors of many common formats, including: [x] HEX-3: #123 (equivalent to #112233) [x] HEX-4: #FA0F ( ... #FFAA00FF) [x] HEX-6: #FF3300 ( ...#F30) [x] HEX-8: #FFAA00FF ( ...#FA0F)...
Submitted by Nicholas Berlette (@nberlette) - 3 years ago
2

Svelte: CSS class attribute (Svelte or HTML friendly), class:directive, TailwindCSS classes, and @apply.

ECMAScript (JavaScript)
SvelteComponent Class Directive Matching Also supports TailwindCSS-style @apply directive for the class value. class:directive={boolean} ...
Submitted by Nicholas Berlette (@nberlette) - 3 years ago
2

GitHub bare url to org/repo Markdown

PCRE2 (PHP >=7.3)
Convert a bare url into organization/repo format in a Markdown link.
Submitted by anonymous - 3 years ago
2

Markdown Heading

Java 8
Parses the text following a '#' and a space all the way up to the next return character. Additional #'s can be added for parsing of other type of headings!
Submitted by Hansen - 3 years ago
2

Simple URL

ECMAScript (JavaScript)
Validate an URL input.
Submitted by @nuragic - 3 years ago
2

Currency with dollar sign, two decimals, negative allowed, starting with period ok

ECMAScript (JavaScript)
Currency with dollar sign, two decimals, negative allowed, starting with period ok
Submitted by Natalia Zolotareva - 3 years ago
2

Extract parts of a URL on Python

Python
Extract parts of a URL on Python
Submitted by dixanms - 3 years ago
2

regex101.com id grabber

PCRE (PHP <7.3)
Grabs the ID for the regex101.com permalink to code.
Submitted by Sasha Garan - 3 years ago (Last modified 3 years ago)
2

Lua Enhanced: +=

Python
Adds += to Lua.
Submitted by anonymous - 3 years ago
2

Delete hour range

PCRE2 (PHP >=7.3)
Select duplicate a.m. - p.m range
Submitted by profeivan - 3 years ago
2

Asciidoc PlantUML Block

Java 8
Regex to select PlantUML Block in Asciidoc documents
Submitted by anonymous - 3 years ago
1...876877878879880...900

Community Library Entry

3

Regular Expression
PCRE (PHP <7.3)

/
(?!<(script|code)[^>]*?>)((\s)(\?|\!|\;|\:))(?![^<]*?<\/(script|code)>)
/
gi
Open regex in editor

Description

white space before punctuations, outside script and code tags

Submitted by ced - 10 years ago