Regular Expressions 101

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Community Patterns

4

Hungarian ANDOK system id

PCRE (PHP <7.3)
no description available
Submitted by Tana - 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 - 10 years ago
4

AMEX, VISA, MASTERCARD, and DISCOVER REGEX

PCRE (PHP <7.3)
First pass at a way to find credit card data using regex.
Submitted by David Maislin - 10 years ago
4

Hibernate SQL Reductor

ECMAScript (JavaScript)
If you want to understand an SQL statement for Hibernate: this replaces the selected fields in an SQL statement generated by Hibernate by a shorthand, since you usually just care about the logic. E.g. it changes select foo0_.bla as bla1_3, foo0_.bar as bar1_3, foo0_.baz1_3 as baz1_3 from ... to sele...
Submitted by Hans-Peter Stoerr www.stoerr.net - 10 years ago
4

match brackets outside quotes

ECMAScript (JavaScript)
no description available
Submitted by Jerry - 9 years ago
4

Find Lat/Long Coordinate pair regex

ECMAScript (JavaScript)
no description available
Submitted by Mike - 9 years ago
4

Currency Formater Accept , & .

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
4

Mask an email regex

PCRE (PHP <7.3)
Replaces second to last but one characters in email with asterisks (@ and last . are protected): john.travolta@gmail.com > j*a@g**.m
Submitted by Wiktor Stribiżew - 9 years ago
4

c#

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
4

replace-last-comma with semicolon

PCRE (PHP <7.3)
replace-last-comma with semicolon similar to http://stackoverflow.com/questions/3829483/how-to-replace-last-occurrence-of-characters-in-a-string-using-javascript
Submitted by Michael Freidgeim - 9 years ago
4

Date yyyy/mm/dd

PCRE (PHP <7.3)
Regex following "ISO 8601" without hour : allowing only month 1 to 12, the day of 1 to 31 for the months of 31 days, the months from 1 to 30 for the months of 30 days, the day of 1 to 28 for February, and the day from 1 to 29 for February of leap years
Submitted by Sara DULMAR - 9 years ago
4

BEST simple mail regex validator

ECMAScript (JavaScript)
VALIDATE ALL WOLRD MAIL RULES Very simple expression Less than 140 caracters. Validate on SonarQube typescript, javascript, angular rules ...
Submitted by Ayslan Johnson (ayslanjohnson@gmail.com) - 6 years ago
7

CSS Import

Python
no description available
Submitted by anonymous - 11 years ago
6

Split address line into street name and house number

PCRE (PHP <7.3)
This regular expression splits an address line like for example "1117 Franklin Blvd" into the street name and house number. It also supports addresses where street name and house number are the other way around (e.g. "Mustermannstr. 1"). Furthermore, this regular expression also supports address lin...
Submitted by Andre Wisplinghoff - 10 years ago
6

Email with + symbol

ECMAScript (JavaScript)
email that accepts the plus (+) symbol
Submitted by luckcheese - 9 years ago
7

simple common lisp tokenizer

ECMAScript (JavaScript)
main symbols and comments are supported
Submitted by d4rw1n1s7@gmail.com - 10 years ago
3

SQL select columns

PCRE (PHP <7.3)
no description available
Submitted by Phan - 11 years ago
3

Task 2, part 1

PCRE (PHP <7.3)
Finds all source numbers in square brackets
Submitted by Kovalev Evgeny - 11 years ago
3

how to match both lines?

Python
f_name may contain spaces, numbers, characters,... so I would go for a but then I couldn't use [...]? anymore to match the second line?
Submitted by anonymous - 10 years ago
3

Find URLs in markdown where the lines have been wrapped

Python
no description available
Submitted by anonymous - 10 years ago
1...885886887888889...900

Community Library Entry

3

Regular Expression
PCRE2 (PHP >=7.3)

/
([A-Z]+)
/
gm
Open regex in editor

Description

Convert camelCase to snake_case

def camelCase2snake_case(txt):
    """ 
    Convert camelCase to snake_case 
    https://regex101.com/library/wUcSv4
    """
    txt = re.sub(r'([A-Z]+)', '_\\1', txt.strip())
    txt = txt.lower()
    return txt

In Python 🐍 the \L case modifier in the substitution pattern to lower case is not supported.

By JV-conseil

Submitted by JV-conseil - 2 years ago