Regular Expressions 101

Please wait while the app is loading...

Regular Expressions 101

@regex101DonateSponsorContactBug Reports & FeedbackWikiWhat's new?

Order By

Sponsors

Library entries

1
pcre

Delte first symbols in line

no description available
Submitted by Ilya Korzh - 7 years ago
6
javascript

Simple Number

Verifies Number is a negative/positive number. Number may be a decimal, but if it is, it requires at least one number before and after the decimal place. Decimal numbers may also be negative or positive. Only 1 decimal place is allowed.
Submitted by David P Smith - 7 years ago
1
python

Nuclear Exploit Kit

Nuclear Exploit Kit Requested file
Submitted by anonymous - 7 years ago
1
python

Parcel ID (Michigan)

REGEX validator for Parcel IDs. Works for Michigan but may for other states if their parcel IDs have form "00-00-00-00-000-000".
Submitted by Lewis - 7 years ago
1
pcre

Black Hole Exploit Kit

HTTP method = “GET” Requested file type ENDS WITH ".php" Requested file type = “x-msdownload” Request MATCHES Regular Expression
Submitted by anonymous - 7 years ago
1
python

localhost ip's with port

Matches localhost ip range with optional port capture: 127.X.X.X or 127.X.X.X:PORT ToDo: check valid ip address.
Submitted by Rodrigo M. A. - 7 years ago
-1
python

localhost match range ip with port number

Matches all ips that points to localhost like, optionally capturing port number: 127.X.X.X and 127.X.X.X:
Submitted by Rodrigo M. A. - 7 years ago
1
pcre

Chrizzzs Regex

no description available
Submitted by anonymous - 7 years ago
1
pcre

ok

no description available
Submitted by anonymous - 7 years ago
-2
javascript

Roman numbers

This regex matches roman numbers from 1 (I) to 3999 (MMMCMXCIX)
Submitted by Nicolò Ribaudo - 7 years ago
1
pcre

Angler Exploit Kit

no description available
Submitted by anonymous - 7 years ago
0
javascript

Date Validation

This pattern validates all the possible dates for all months in YYYY-MM-DD format. Due to limitations of regex it can not validate the dates of february for leap year. It will allow the date 29 for leap year too. Make sure to validate that yourself.
Submitted by Ashutosh Agrawal - 7 years ago
2
pcre

YouTube Iframe parser

no description available
Submitted by anonymous - 7 years ago
1
pcre

BETWEEN clause

no description available
Submitted by anonymous - 7 years ago
2
python

yowsup-cli message parsing

This pattern parses the yowsup-cli message output to recover (otherwise lost) messages. Current yowsup version: v2.4
Submitted by kerel - 7 years ago
-2
javascript

Valid Email

Use this Regex for server-side validation also with some slight modifications like so for .NET -- @\w+([-+.']\w+)@\w+([-.]\w+)\.[a-zA-Z0-9]{2,6}(-.{2,6})*;
Submitted by Fred Scales - 7 years ago
1
javascript

Valid Email

This is the javascript equivalent that .NET uses in their server-side validators.
Submitted by anonymous - 7 years ago
2
javascript

Markup link

no description available
Submitted by anonymous - 7 years ago
1
pcre

Capture nested strings using recursion

Brackets, Parentheses, Braces, delimited
Submitted by anonymous - 7 years ago
1
javascript

check password

no description available
Submitted by anonymous - 7 years ago
1...722723724725726727728...840

boolean expression with brackets matcher

Vote

1

Regular Expression
pcre

/
(?(DEFINE) (?<exprs> (?&expr)(\s+(?&bool)\s+((?&expr)|\(\s*(?&exprs)\s*\)))* ) (?<expr> (?&valleft)\s?(?&comp)\s?(?&valright) ) (?<comp> ((!=)|(==)|(<=)|(>=)|(<)|(>)){1} ) (?<valleft> (?&not)[\w\.]+ ) (?<valright> [\w\.]+ ) (?<bool> (and|or) ) (?<not> (not\s+)?) ) (?&exprs)
/
xmg
Open regex in editor

Description

Loading markdown...
Submitted by Ilya Filisteev - 8 years ago