Regular Expressions 101

Order By

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

Community Patterns

-18

dd-mm-YYYY HH:mm:ss (year range 1000-2999)

PCRE (PHP <7.3)
Validate Gregorian calendar dates that contain 24-hour times. This will also correctly match the Feb 29 date when it falls on a valid leap year. Leap years occur every 4 years, with one exception: when a year is evenly divisible by 100 but not evenly divisible by 400, the year will not be a leap ye...
Submitted by Ka. - 12 years ago (Last modified a year ago)
-2

Finds HTML img tags

PCRE (PHP <7.3)
no description available
Submitted by Matt Solum - 11 years ago
-2

Select ID from regex101 URL

ECMAScript (JavaScript)
no description available
Submitted by Vinay - 11 years ago
-2

test

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-2

1_aa3

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-2

Find multiple XML documents in file

PCRE (PHP <7.3)
as title says
Submitted by Doro - 11 years ago
-2

indonesian p0rn word filter

PCRE (PHP <7.3)
find and replace bad and p0rn indonesian words
Submitted by teknokoplak - 11 years ago
-2

valid windows file name

ECMAScript (JavaScript)
no description available
Submitted by Mitacha - 10 years ago
-2

link

Python
no description available
Submitted by NTP-[SADAS] - 10 years ago
-2

Comma-separated numbers with ranges

ECMAScript (JavaScript)
no description available
Submitted by Eugene - 10 years ago
-2

five word capture

Python
no description available
Submitted by anonymous - 10 years ago
-2

match only words consisting of 3 repeated letters, e.g. lllkkk

Python
no description available
Submitted by kali - 10 years ago
-2

python bracketed text

Python
why doesn't this match text in brackets?
Submitted by anonymous - 10 years ago
-2

Match website - http:|https://i.imgur.com

ECMAScript (JavaScript)
no description available
Submitted by ghrifter - 10 years ago
-2

Match Content-Range response header

ECMAScript (JavaScript)
Matches the Content-Range response header format -[end]/[total|*]
Submitted by mdezem - 10 years ago
-2

Host and domains

Python
no description available
Submitted by anonymous - 10 years ago
-2

Validate credit card numbers

PCRE (PHP <7.3)
Visa, MasterCard, American Express, Diners Club, Discover, JCB
Submitted by www.regular-expressions.info/creditcard.html - 10 years ago
-2

IPv4

Python
allows for all legal IPv4 addresses
Submitted by anonymous - 10 years ago
-2

Match words in a string

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
-2

finds the instance of two or more repeating letters

Python
no description available
Submitted by cp0153 - 9 years ago
1...331332333334335...902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
\[([^,\]]+),([^,\]]+)\]
/
g
Open regex in editor

Description

no description available

Submitted by Marius Schulz - 11 years ago