Regular Expressions 101

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Community Patterns

Search among 18,040 community submitted regex patterns...

1

Mediawiki History Dump filenames

Matches filenames of MediaWiki history dumps.

Submitted by CristianCantoro - 10 months ago

1

IANA Media Type

Parses an IANA Media Type value. Doesn't seem to capture repeating parameters, which is a bit of an edge case but valid I think - any suggestions on how to fix would be appreciated.

Submitted by scottbdr - 10 months ago

1

111

PCRE2 (PHP >=7.3)

((?:[零一二三四五六七八九十百]+))$

Submitted by anonymous - 10 months ago

1

Estract download speed from Ookla Speedtest output

PCRE2 (PHP >=7.3)

surely can be optimized more, but it does the job and the interested number of lines is fairly low.

Submitted by anonymous - 10 months ago

1

username_unix.gamesave

PCRE2 (PHP >=7.3)

TILE_WIDTH = 2 # Includes space for padding and one space between tiles formatted_board = "" for i in range(rows): formatted_row = "" for j in range(columns):...

Submitted by robert paulson - 10 months ago (Last modified 6 months ago)

1

Match Single Line (//) Comments in JSON

PCRE2 (PHP >=7.3)

Doesn't get confused by the url values like "https://www.example.com" or "file:///some.txt"

Submitted by Redu - 10 months ago (Last modified 10 months ago)

1

Regex to Match Regular Expression in JS/TS

PCRE2 (PHP >=7.3)

Matches regular expressions in JS/TS (EcmaScript) code including none or one of the flags g, i`, m, u, y`.

Submitted by Redu - 10 months ago

1

Credit card regex

PCRE2 (PHP >=7.3)

Credit card name and surname with turkish char

Submitted by anonymous - 10 months ago

1

IPv4 address with optional CIDR suffix

ECMAScript (JavaScript)

Matches any valid IPv4 address with, optionally, a CIDR suffix. 0.0.0.0 to 255.255.255.255 and 1.1.1.1/0 to 1.1.1.1/32. Use the following regex if you don't want to allow the CIDR suffix. ...

Submitted by MAZ01001 - 10 months ago

1

Remove multiple forward slash from url

PCRE2 (PHP >=7.3)

(): This is a capturing group that matches any character except a colon :, and it captures this character for later use in the replacement. (/ {2,}): This part matches two or more consecutive forward slashes. The replacement part $1/ uses the captured character from the first part (which is any char...

Submitted by Apon Ahmed - 10 months ago (Last modified 10 months ago)

1

homework 1

PCRE2 (PHP >=7.3)

this is the answer for question 1

Submitted by Christian Thrige Nielsen - 10 months ago

1

Python logs parser (Airflow)

Parser for individual row of log pattern for parsing row in format: [2023-03-11 00:00:07,377] {taskinstance.py:1088} INFO - Starting attempt 1 where: - time_full: [2023-03-11 00:00:07,377]...

Submitted by anonymous - 10 months ago

1

simple email validator

PCRE2 (PHP >=7.3)

Email address validator

Submitted by anil - 10 months ago

1

PascalCase -> snake_case

PCRE2 (PHP >=7.3)

Works with many forms of alphanumeric PascalCase PascalCase Pascal PascalCaseCase Pascal684Case (pascal684_case) Pas45calCase (pas45cal_case)...

Submitted by inesvar - 10 months ago

1

camelCase -> snake_case

PCRE2 (PHP >=7.3)

Works with many forms of alphanumeric camelCase camelCase camel camelCaseCaseCase... (with as many words as you want) ca65melCase (ca65mel_case) camelCCase (camel_c_case)...

Submitted by inesvar - 10 months ago

1

Regex to catch prices

PCRE2 (PHP >=7.3)

(faturou\s|faturamento de\s|faturei\s|de um faturamento )(mais\sde\s)(((((R\$)+(\s)(\d){1,6}(\s)((\.|\,)\d{1,3}|k|mil))))+|((de\s(\d){1,3}(k|mil)\spara\s(\d){1,3}(k|mil)))+)(\sde\sfaturamento)(\sem\s(menos\sde\s)(\d{1,2})\sdias)(\sfoi o que a minha (aluna|cliente|mentoranda|mentorada)+ faturou)(\sap...

Submitted by Leonardo Paris - 10 months ago

1

happy birthday

PCRE2 (PHP >=7.3)

Submitted by anonymous - 9 months ago

1

groupping by :#

PCRE2 (PHP >=7.3)

sed 's/\(:#\)./ -CLEARED-/g'

Submitted by anonymous - 9 months ago

1

RM

ECMAScript (JavaScript)

Smax Micro Focus Regex

Submitted by Resul MUŞLU - 9 months ago (Last modified 9 months ago)

1

Smax micro focus Web ports regex

ECMAScript (JavaScript)

Smax micro focus Web ports regex

Submitted by Resul MUŞLU - 9 months ago

1...806 807 808 809 810...902

Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/

(\b(?'first_word'[a-z](?!([[:alnum:]]*_)(?# the word doesn't contain underscores))(?:[a-z0-9]*)))|(\G(?'trailing_word'[A-Z][a-z0-9]*))

/

gm

Open regex in editor

Description

Works with many forms of alphanumeric camelCase

camelCase
camel
camelCaseCaseCase... (with as many words as you want)
ca65melCase (ca65mel_case)
camelCCase (camel_c_case)

What isn't matched

PascalCase
words with '_' underscores in them (camel_Snake_Case)

Remarks

all 'lowercase' words are matched... but they're not changed by the regex !

Submitted by inesvar - 10 months ago