Regular Expressions 101

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Community Patterns

0

PLP redirection

PCRE2 (PHP >=7.3)
PLP redirection
Submitted by anonymous - 10 months ago
0

Match IP Address with Port Number

PCRE2 (PHP >=7.3)
Movin4Life.org
Submitted by anonymous - 4 months ago
0

test

PCRE2 (PHP >=7.3)
test
Submitted by anonymous - 4 months ago (Last modified 4 months ago)
0

Validates an IPv4 Address

PCRE2 (PHP >=7.3)
Given a string, the regex would match if it is a valid IPv4 address.
Submitted by A-Paint-Brush - 4 months ago (Last modified 4 months 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
1...567568569570571...902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
(\d+)(?<!10)(?<!127)\.(\d+)(?<!192\.168)(?<!172\.(1[6-9]|2[0-9]|3[0-1]))\.(\d+)\.(\d+)
/
g
Open regex in editor

Description

Matches publicly available IPv4 addresses (excludes 10., 172.16-32, and 192.168 blocks).

Submitted by anonymous - 9 years ago