Regular Expressions 101

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Community Patterns

4

Function Declaration / Expression

ECMAScript (JavaScript)
matches both function declarations and expressions in javascript. ex. function name () {...} || function () {}
Submitted by Ja Superior - 9 years ago
4

DNS hostname well-formedness validation

PCRE (PHP <7.3)
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 - 9 years ago
4

MasterCard validate 2017

PCRE (PHP <7.3)
Match a MasterCard with new range for 2017: 51-55 and 2221-2720 @incarnated
Submitted by John C - 9 years ago
4

Timestamp

PCRE (PHP <7.3)
12.04.1975T03:02:00.88 With milliseconds and T seperator. Excludes most invalid dates, except 30/31ths of month, leap years/february heaving only 29/28.
Submitted by anonymous - 9 years ago
4

Skype ConversationText Extraction

PCRE (PHP <7.3)
When you copy a skype conversation and paste it in a text area then it includes timestamps, User's name and whether or not the message had been edited. This matches all of those in seperate groups for easy substitution
Submitted by Zalatos - 9 years ago
4

UK Postcode

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

html tags

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

Get image tag attributes

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

Validate Argentinian postal code

PCRE (PHP <7.3)
Validates CPA (Código Postal Argentino, spanish for Argentinian Postal Code).
Submitted by Agustín Bouillet - 9 years ago
4

Validates argentinian postal code

PCRE (PHP <7.3)
Validates the two valid postal codes in Argentina
Submitted by Agustín Bouillet - 9 years ago
4

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

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

remove blank keys in query string

PCRE (PHP <7.3)
looks for blank keys in the query string and remove it, in order to make shorter request.
Submitted by M.Nizam - 8 years ago
4

Credit Card Validation - MasterCard, Visa, Amex, Discover

PCRE (PHP <7.3)
MasterCard - ^5[1-5]\d+ Visa - ^4\d+ Amex - ^3[47]\d+ Discover - 6011|65|64...
Submitted by Eric Foster - 8 years ago
4

Campos Decimais (pt_br)

ECMAScript (JavaScript)
Funciona para campos decimais para moeda nacional brasileira. Aceita números inteiros, separação por milhar e a separação decimal.
Submitted by Murilo C. Cumerlatto - 8 years ago
4

INI Parser

PCRE (PHP <7.3)
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...
Submitted by Raxdiam - 5 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) - 7 years ago
4

CloudFlare

PCRE2 (PHP >=7.3)
Cloud Flare
Submitted by anonymous - 3 years ago
4

Email

PCRE2 (PHP >=7.3)
email format control
Submitted by ahmetbarut - 3 years ago
1...891892893894895...902

Community Library Entry

4

Regular Expression
PCRE (PHP <7.3)

/
^20(((([248][048])|([13579][26]))\/(((0[13578]|1[02])\/([0-2][0-9]|3[01]))|((0[469]|11)\/([0-2][0-9]|30))|(02\/([0-2][0-9]))))|((([248][1-35-79])|([13579][013-57-9]))\/(((0[13578]|1[02])\/([0-2][0-9]|3[01]))|((0[469]|11)\/([0-2][0-9]|30))|(02\/(((0|1)[0-9])|(2[0-8]))))))$
/
Open regex in editor

Description

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