Regular Expressions 101

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Community Patterns

1

matching foramt ,xxx:

Python
for dictionary
Submitted by anonymous - 8 years ago
1

test

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

Comienzo de string

PCRE (PHP <7.3)
Señala el comienzo de un string en modo multilinea
Submitted by Juan Miguel - 8 years ago
1

Add a string to a comma-separated list if not already in list

PCRE (PHP <7.3)
matches only lines that do not contain the string uses negative look arounds appends the new item always to the back suffers from a leading comma in case the list was empty
Submitted by @ubunatic - 8 years ago
1

Проверка повтора слов

PCRE (PHP <7.3)
От начала строки, разделенных пробелом
Submitted by DocSS - 8 years ago
1

match url

PCRE (PHP <7.3)
no description available
Submitted by jakub - 8 years ago
1

Compare two comma separated 4-digit years (first must be greater)

PCRE (PHP <7.3)
Compares two comma separated 4-digit years, and if the first one is greater, a match is returned. AUTHOR: Wiktor Stribizew SO PRofile: http://stackoverflow.com/users/3832970/wiktor-stribi%C5%BCew
Submitted by Wiktor Stribizew - 8 years ago
1

before or equal to 12:35pm

PCRE (PHP <7.3)
no description available
Submitted by Brandon - 8 years ago
1

match anything before 19-35pm

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

dawdw

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

IP username

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

LettersChangeNumber

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

Check sudoku

PCRE (PHP <7.3)
Check if a sudoku board is valid or not. The board has to be as a single line. Seen at http://codegolf.stackexchange.com/questions/78210/regex-golf-verify-a-sudoku-solution
Submitted by anonymous - 8 years ago
1

<Trigger R="&#92;&#92;aPC -?\d+ [^:]+:[^&#92;&#92;]+&#92;&#92;/a tells

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

Places Regex

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

/software version

PCRE (PHP <7.3)
only xxx , xxx.xxx and xxx.xxx.xxx are allowed
Submitted by neha tiwari - 8 years ago
1

g-test

PCRE (PHP <7.3)
little test for g modifier
Submitted by anonymous - 8 years ago
1

Cucumber feature regex

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

Regex ID from Gifs.com URLs

PCRE (PHP <7.3)
no description available
Submitted by gif, gifs - 8 years ago
1

Find line and insert under it

Python
Finds a line and appends the replacement below it. Tries to preserve indentation (tabs or spaces) and to avoid duplicate replacements. I used it in Sublime Text to batch edit several instances of a JS config object across several files.
Submitted by anonymous - 8 years ago
1...460461462463464...566

URL regexp

40

Regular Expression
PCRE (PHP <7.3)

/
((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[.\!\/\\w]*))?)
/
ig
Open regex in editor

Description

A quite neat regular expression for URLs, e-mails..., I found on Matthew O'Riordan's blog.

Submitted by Matthew O'Riordan - 12 years ago