Regular Expressions 101

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Community Patterns

9

English date in "dd mmmm yyyy" format

Python
Parse an English date following the "dd mmmm yyyy" format.
Submitted by Tantale - 9 years ago
9

Letters, numbers and blank space

PCRE (PHP <7.3)
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 years ago
10

RFC 3987 compliant URL regex

ECMAScript (JavaScript)
This is a JavaScript port of the URL regex from http://stackoverflow.com/a/190405/384062 that includes a bug fix and some optimization. Mathias Bynens's Regenerate was used to convert unicode escapes. Bug fix: Eliminated stray | falsely allowing querystring to contain | ...
Submitted by Hans Meyer - 9 years ago
19

Between tags content

PCRE (PHP <7.3)
no description available
Submitted by Agustín Bouillet - 9 years ago
17

Capture comma separated numbers

PCRE (PHP <7.3)
Capture comma separated numbers, no matter if there are spaces before or after the commas.
Submitted by Fernando Nunes - 9 years ago
87

Password Validation

ECMAScript (JavaScript)
Checks that a password has a minimum of 6 characters, at least 1 uppercase letter, 1 lowercase letter, and 1 number with no spaces.
Submitted by Christian Klemp - 9 years ago
31

ninite

PCRE (PHP <7.3)
no description available
Submitted by peek - 9 years ago
29

Wrap long string to spec length

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

find all link(<a>) tags expect your links in href attribute

ECMAScript (JavaScript)
YourLink - not found AnotherLink - found
Submitted by KoT - 9 years ago
10

Just validate one sequence of

PCRE (PHP <7.3)
sdfs sdfs FLBREV00022230 dsfsdfs sdfsf FLBREV00022234 In this case is false
Submitted by Fiipe - 10 years ago
10

Valid Telephone Number

ECMAScript (JavaScript)
This regex validates varying types of telephone numbers.
Submitted by Adam Recvlohe - 9 years ago
6

Replace caracters not inside HTM tags

ECMAScript (JavaScript)
Select a character (or string) ingnoring if that element is inside the HTML tags. Useful to apply html tags using replace.
Submitted by Alex5B - 10 years ago
6

IOS3166 Country Code Identification REGEX

Python
IOS3166 Country Code Identification REGEX
Submitted by theitgeek@recu.org.uk - 9 years ago
29

CSV line parsing

PCRE (PHP <7.3)
Captures all fields from a CSV file's line. Can be customized with user-defined field separator and protecting character.
Submitted by Various - 10 years ago
52

Disorted Email Addresses

PCRE (PHP <7.3)
Matches distorted email addresses and converts them back to real ones.
Submitted by dislick - 12 years ago
7

Max - URL Extract

PCRE (PHP <7.3)
no description available
Submitted by Ayush - 9 years ago
18

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

Recommended
PCRE (PHP <7.3)
Validate and capture dateTime parts, includes validation for leap years, range 1000-2999. Fixed bug
Submitted by Ka. - 11 years ago
15

IPv4

PCRE (PHP <7.3)
no description available
Submitted by robwa - 9 years ago
25

Quote Macthing with escape

ECMAScript (JavaScript)
Matches text within quotes (", ') and escapes the charecters.
Submitted by Vihan Bhargava - 10 years ago
107

ECMAScript/JavaScript trim

ECMAScript (JavaScript)
Trim leading and trailing whitespace from a string.
Submitted by fp - 11 years ago (Last modified 2 months ago)
123456...900

Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
^[^\p{L}:]|.[^\p{L}0-9:\-_]|[^\p{L}0-9]$
/
u
Open regex in editor

Description

This version of the regex is less permissive than the w3c documentation.. It matches only the common attribute syntax.

Submitted by bye-csavier - 6 months ago