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Popular Regular Expression Snippets

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Regular Expression Apache redirect from domain.com to www.domain.com

apache

9 883 posted 16 years ago by therobot

Regular Expression Convert whitespace to underscores

regex

6 627 posted 16 years ago by lagrangeapex

Regular Expression Find CSS Style Names

css
regex

5 700 posted 14 years ago by mocha0range

Regular Expression JS Email Validation

regex

5 815 posted 16 years ago by beforebeta

Regular Expression Grab an html tag and leave just the content

html

5 727 posted 16 years ago by rhlowe

Regular Expression Useful regular expressions

regex

4 668 posted 14 years ago by vagrantradio

Regular Expression Find CSS Attributes

css
regex

4 1272 posted 14 years ago by mocha0range

Regular Expression Find CSS Style Definitions

css
regex

4 652 posted 14 years ago by mocha0range

Regular Expression Regular expression: catch img src attribute in html

html

4 1439 posted 15 years ago by albertomori

Regular Expression Regular Expression to Grab the Content of an XML Element

xml

4 1087 posted 17 years ago by rengber

Regular Expression The Best Email RegEx (yet)

email
regex

3 774 posted 13 years ago by nkm

Regular Expression RegEx to find replace in TextMate

3 937 posted 13 years ago by rwczippy

Regular Expression Regular Expressions For URI Validation/Parsing

3 5108 posted 15 years ago by wizard04

Regular Expression Prime number tester

regex

3 696 posted 15 years ago by banzaiman

Regular Expression Grab any unclosed XHTML img tags

regex
xhtml

3 702 posted 15 years ago by egoens

Regular Expression Hexadecimal Value

regexp

3 648 posted 17 years ago by Corhol

Regular Expression Regex - Match IPv6 address

2 1289 posted 13 years ago by dmertl

Regular Expression Regex - Match IPv4 address

2 1512 posted 13 years ago by dmertl

Regular Expression Number Match in Larger Context

regex

2 704 posted 13 years ago by joelhaus

Regular Expression Valid phone number

phone
regex

2 628 posted 14 years ago by devision

Regular Expression RFC 2822 Email Validation

2 1390 posted 14 years ago by pacey

Regular Expression RFC 2822-compliant (mostly) Email Address Regular Expression

email

2 881 posted 14 years ago by chrisdpratt

Regular Expression Strong Password RegEx

regex

2 672 posted 14 years ago by axelitus

Regular Expression IBAN regex (all IBANs)

regex

2 7591 posted 14 years ago by resurge

Regular Expression RegExp: Catch HTML element

html
regexp

2 687 posted 15 years ago by albertomori

Regular Expression Regex for matching floating point number

regex

2 693 posted 15 years ago by hoffstein

Regular Expression regex to trim data from beginning of a line

regex

2 739 posted 15 years ago by jhenry

Regular Expression Match CSS and JS Comments

2 1143 posted 15 years ago by mikegreen

Regular Expression US Phone Number with extension, flexible

2 1627 posted 16 years ago by martinkas

Regular Expression Give headings IDs

html

2 445 posted 16 years ago by lagrangeapex

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