regex101: html color match: transparent, #fff, #123456, rgb, rgba, hsl, hsla

38

Cron schedule

Created·2016-06-02 15:45

Flavor·PCRE (Legacy)

Recommended·

Validate cron lines (even the ones commented out)

Submitted by anonymous

36

best youtube id match ( iframe embed replace ready )

Created·2019-03-12 16:17

Flavor·PCRE (Legacy)

Recommended·

Submitted by mi-ca.ch

33

Parsing browser User Agents

Created·2015-01-23 16:47

Updated·2023-07-19 08:36

Flavor·PCRE (Legacy)

From a (fairly large) list of User Agent strings, extract the OS, Browser, and Device Type.

Submitted by OnlineCop

15

RFC3339 DateTime

Created·2016-02-12 11:44

Flavor·PCRE (Legacy)

Recommended·

Validates a RFC3339 DateTime format. Does not validates the Data

Submitted by anonymous

6

Quartz Cron Validation

Created·2015-07-27 12:13

Flavor·PCRE (Legacy)

http://stackoverflow.com/questions/2362985/verifying-a-cron-expression-is-valid-in-java

Submitted by anonymous

9

Fixo LDN CSP e SEM CSP

Created·2014-11-18 14:02

Flavor·PCRE (Legacy)

no description available

Submitted by Marcos MÃ¼ller

485

regex101.com permalink id grabber

Created·2013-12-12 13:09

Updated·2024-04-11 14:32

Flavor·PCRE (Legacy)

Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.

Submitted by chris mccoy

238

Matching email addresses per RFC5322

Created·2013-10-23 17:46

Flavor·PCRE (Legacy)

The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.

Submitted by Michael Musson

10

If-Then-Else Conditionals

Created·2015-08-28 15:52

Flavor·PCRE (Legacy)

no description available

Submitted by anonymous

10

MikroTik FireWall

Created·2015-05-30 10:27

Flavor·PCRE (Legacy)

Regex used in Splunk to extract fields from Mikrotik FW. NOTES: Mikrotik must be configured to use "BSD Syslog" format FW rules must add, as log prefix, the action: drop accep reject etc...

Submitted by HappyIdeasMaker

11

remove comments from php code

Created·2015-05-26 15:18

Flavor·PCRE (Legacy)

no description available

Submitted by anonymous

13

Match Gmail Email

Created·2014-11-20 23:58

Flavor·PCRE (Legacy)

Recommended·

Match Gmail Email

Submitted by Ã“scar EnrÃquez

5

C# Regex Extract/Match Nested HTML Elements/Tags

Created·2022-03-03 19:13

Updated·2023-08-01 07:26

Flavor·.NET 7.0 (C#)

With this C# regex, you can easily match/Parse Nested HTML tags. Example input: someTitle SomeHeader anotherHeader HelloWorld Output: anotherHeader HelloWorld string pattern = $@"{ startP }((?'nested'{ openP })|{ closeP }(?'-nested')|\w\W]?){ closeP }"; *'StartP' (Must include open tag), example: <div id="target" *'openP' example: <div *'closeP' example: </div References: [In Depth with RegEx Matching Nested Constructions In Depth with .NET RegEx Balanced Grouping Regular expression matches closed HTML tags (nesting is supported)

Submitted by w4po

5

get specific value from html tag

Created·2016-09-25 06:08

Flavor·PCRE (Legacy)

no description available

Submitted by A.ROA

5

look for any $_POST['name']

Created·2016-01-14 23:35

Flavor·PCRE (Legacy)

if you are as lazy as me and want to replace every "=$_POST['name'];" using Dreamweaver or any development tool that allows using regular expressions to search in current file/document.

Submitted by Kevinator

5

Validate hex color

Created·2015-12-02 11:14

Flavor·PCRE (Legacy)

Validates hexadecimal color codes based on the following rule set: Optionally starting with a hash. 3 or 6 characters in length. Using the [0-9a-f] character set.

Submitted by Nathaniel Blackburn

5

Codice fiscale italiano

Created·2015-10-09 09:14

Flavor·PCRE (Legacy)

Oltre a supportare le omocodie controlla in modo restrittivo il carattere relativo al mese di nascita

Submitted by Aldo Medri

5

Variable name of code

Created·2015-09-19 11:18

Flavor·PCRE (Legacy)

To get a variable name from a source code: The variable name is before the '=' (equal sign) This is the way to detect. Problem: Only 1 variable can get from 1 line. Unfortunately, this can get variable between after "//" and before ";" too. I made this for fake script debugger. Just get variable from source code and put that after last semicolon with so much tab and messagebox code for every line.

Submitted by Setsuna

5

relative to absolute

Created·2015-01-20 01:16

Flavor·PCRE (Legacy)

relative to absolute

Submitted by xp_prg

7

Remove Widows (PHP)

Created·2015-09-13 13:44

Flavor·PCRE (Legacy)

Adds a non-breaking space between the last two words of sentences

Submitted by herkulano

7

validate US (5 & 9 digit) ZipCodes and CA PostalCodes

Created·2015-05-15 18:00

Flavor·PCRE (Legacy)

no description available

Submitted by anonymous

7

[A-Za-z\x{0600}-\x{06FF}\x{1000}-\x{1021}_-][-\w]*

Created·2014-11-03 16:04

Flavor·PCRE (Legacy)

A-Za-z\x{0600}-\x{06FF}\x{1000}-\x{1021}_-*

Submitted by [A-Za-z\x{0600}-\x{06FF}\x{1000}-\x{1021}_-][-\w]*

4

semver

Created·2014-10-03 18:53

Flavor·PCRE (Legacy)

Recommended·

Semantic Versioning regex pattern according to Tom Preston-Werner http://semver.org/ https://github.com/mojombo/semver/blob/master/semver.md First version of this regex follows semver 2.0.0. Discussion of semver and this regex was posted on https://github.com/mojombo/semver.org/issues/59

Submitted by @gvlx <Gerardo Lisboa>

18

Date Regex(DD/MM/yyyy)

Created·2015-08-26 06:25

Flavor·PCRE (Legacy)

no description available

Submitted by alcaamado

20

Between tags content

Created·2015-10-24 10:52

Flavor·PCRE (Legacy)

no description available

Submitted by Agustín Bouillet

8

Sentence grabber /w extra check

Created·2014-05-29 17:30

Flavor·PCRE (Legacy)

Grabs sentences including terms like: e.g. z.b. Figs.These get caught in 1st capturing group. Problem: how to only accept matching sentences which contain pattern \b\d+[a-z]{0,2}\b?

Submitted by light0

11

Codice fiscale

Created·2015-08-19 10:43

Flavor·PCRE (Legacy)

Check "codice fiscale"

Submitted by Luca

9

IPv4 Validator

Created·2020-07-26 21:19

Updated·2023-08-07 17:36

Flavor·PCRE (Legacy)

no description available

Submitted by anonymous

9

Letters, numbers and blank space

Created·2016-01-04 17:31

Flavor·PCRE (Legacy)

The following regular expression matches only letter a-z A-Z numbers 0-9 and a blank space for a given string.

Submitted by Jordan Raychev

9

Extract url GET parameters

Created·2014-09-16 08:37

Flavor·PCRE (Legacy)

Returns key/value pair of a url. Also works with google fonts which has additional information

Submitted by anonymous

17

Capture comma separated numbers

Created·2015-07-19 01:57

Flavor·PCRE (Legacy)

Capture comma separated numbers, no matter if there are spaces before or after the commas.

Submitted by Fernando Nunes

31

ninite

Created·2015-09-29 11:28

Flavor·PCRE (Legacy)

no description available

Submitted by peek

29

Wrap long string to spec length

Created·2013-07-21 20:34

Flavor·PCRE (Legacy)

no description available

Submitted by fullpipe

10

Just validate one sequence of

Created·2014-10-23 13:22

Flavor·PCRE (Legacy)

sdfs sdfs FLBREV00022230 dsfsdfs sdfsf FLBREV00022234 In this case is false

Submitted by Fiipe

29

CSV line parsing

Created·2014-10-15 13:22

Flavor·PCRE (Legacy)

Captures all fields from a CSV file's line. Can be customized with user-defined field separator and protecting character.

Submitted by Various

53

Disorted Email Addresses

Created·2013-01-16 14:11

Flavor·PCRE (Legacy)

Matches distorted email addresses and converts them back to real ones.

Submitted by dislick

19

Date: DD-MM-YYYY hh:mm:ss

Created·2013-05-17 13:07

Flavor·PCRE (Legacy)

Recommended·

Validate and capture dateTime parts, includes validation for leap years, range 1000-2999. Fixed bug

Submitted by Ka.

7

Max - URL Extract

Created·2016-05-09 10:38

Flavor·PCRE (Legacy)

no description available

Submitted by Ayush

15

IPv4

Created·2015-12-17 08:14

Flavor·PCRE (Legacy)

no description available

Submitted by robwa

22

UK Postcode Checker

Created·2014-10-21 08:23

Flavor·PCRE (Legacy)

Checks for valid UK/British postcodes. There was another on here that had for some reason been upvoted, but it was actually incorrect as it worked on none of my valid own postcodes! Namely that it assumed two letters and a number (BS3) when you can have variations (M20). Allows for an optional space and separates the two parts into groups.

Submitted by MaffooBristol

4

INI Parser

Created·2020-03-03 01:56

Flavor·PCRE (Legacy)

Created for purpose of reading an INI file in C# applications. Supports comments and comment escape characters. I plan to add more escape characters (such as \=). s - Section scp - Section Comment Prefix sc - Section Comment k - Key v - Value kvcp - KeyValue Comment Prefix kvc - KeyValue Comment cp - Comment Prefix c - Comment I am open to any suggestion that may improve upon this regex, and/or would allow me to learn more. Created by Raxdiam

Submitted by Raxdiam

4

Credit Card Validation - MasterCard, Visa, Amex, Discover

Created·2016-07-09 21:06

Flavor·PCRE (Legacy)

MasterCard - ^5[1-5]\d+ Visa - ^4\d+ Amex - ^3[47]\d+ Discover - 6011|65|64...

Submitted by Eric Foster

4

remove blank keys in query string

Created·2016-07-03 12:36

Flavor·PCRE (Legacy)

looks for blank keys in the query string and remove it, in order to make shorter request.

Submitted by M.Nizam

4

,(?=([^\"]\"[^\"]\")(?![^\"]\"))

Created·2016-05-31 12:17

Flavor·PCRE (Legacy)

no description available

Submitted by anonymous

4

Validates argentinian postal code

Created·2016-05-28 14:05

Flavor·PCRE (Legacy)

Validates the two valid postal codes in Argentina

Submitted by Agustín Bouillet

4

Validate Argentinian postal code

Created·2016-05-28 13:57

Flavor·PCRE (Legacy)

Validates CPA (Código Postal Argentino, spanish for Argentinian Postal Code).

Submitted by Agustín Bouillet

4

MasterCard validate 2017

Created·2016-03-22 03:14

Flavor·PCRE (Legacy)

Match a MasterCard with new range for 2017: 51-55 and 2221-2720 @incarnated

Submitted by John C

4

DNS hostname well-formedness validation

Created·2016-03-10 19:44

Flavor·PCRE (Legacy)

Validates that a DNS hostname is well-formed only. You will still need to check that the overall length of the hostname, including the implied trailing "." (if not present), does not exceed 255 bytes.

Submitted by Jeff Walter

4

Version Matcher

Created·2016-01-25 18:44

Flavor·PCRE (Legacy)

Matches version strings.

Submitted by anmols

4

kenteken validator

Created·2016-01-06 14:30

Flavor·PCRE (Legacy)

validator voor kenteken vb: 11-AA-BB

Submitted by Senne Root

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Community Patterns

Cron schedule

best youtube id match ( iframe embed replace ready )

Parsing browser User Agents

RFC3339 DateTime

Quartz Cron Validation

Fixo LDN CSP e SEM CSP

regex101.com permalink id grabber

Matching email addresses per RFC5322

If-Then-Else Conditionals

MikroTik FireWall

remove comments from php code

Match Gmail Email

C# Regex Extract/Match Nested HTML Elements/Tags

get specific value from html tag

look for any $_POST['name']

Validate hex color

Codice fiscale italiano

Variable name of code

relative to absolute

Remove Widows (PHP)

validate US (5 & 9 digit) ZipCodes and CA PostalCodes

[A-Za-z\x{0600}-\x{06FF}\x{1000}-\x{1021}_-][-\w]*

semver

Date Regex(DD/MM/yyyy)

Between tags content

Sentence grabber /w extra check

Codice fiscale

IPv4 Validator

Letters, numbers and blank space

Extract url GET parameters

Capture comma separated numbers

ninite

Wrap long string to spec length

Just validate one sequence of

CSV line parsing

Disorted Email Addresses

Date: DD-MM-YYYY hh:mm:ss

Max - URL Extract

IPv4

UK Postcode Checker

INI Parser

Credit Card Validation - MasterCard, Visa, Amex, Discover

remove blank keys in query string

,(?=([^\"]*\"[^\"]*\")*(?![^\"]*\"))

Validates argentinian postal code

Validate Argentinian postal code

MasterCard validate 2017

DNS hostname well-formedness validation

Version Matcher

kenteken validator

,(?=([^\"]\"[^\"]\")(?![^\"]\"))