Regular Expressions 101

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Community Patterns

12

Username with "_" "-"

ECMAScript (JavaScript)
no description available
Submitted by Gianvy - 9 years ago
19

Get path from any text

Recommended
PCRE2 (PHP >=7.3)
Get path (windows style) from any type of text (error message, e-mail corps ...), quoted or not. THIS IS THE SINGLE LINE VERSION !_ If you want understand how it work or edit it, go https://regex101.com/r/7o2fyy Relative path are not supported...
Submitted by nitrateag - 2 years ago (Last modified a year ago)
7

Match text (not within html tag)

ECMAScript (JavaScript)
no description available
Submitted by Moistly - 10 years ago
15

us postal/zip

ECMAScript (JavaScript)
no description available
Submitted by jay johnson - 11 years ago
7

if, else if, else condtion match

ECMAScript (JavaScript)
matches full if condition statment eg: if(condition){ ... } else if(condition){ ... }else{...
Submitted by Ivan Jakesevic - 10 years ago
1

IP Addresses

PCRE (PHP <7.3)
Matches IP Addresses with minimum false positives
Submitted by Austin-Hanson - 9 years ago
7

CSS Import

Python
no description available
Submitted by anonymous - 11 years ago
4

Element's Attribute Value in XML (simple)

PCRE (PHP <7.3)
Simple regular expression for extracting attribute value of the element in XML-string. Attribute value should be in quotes.
Submitted by Nikita Danilov - 10 years ago
9

domain - host

Python
no description available
Submitted by anonymous - 9 years ago
4

Remove HTML tags

PCRE (PHP <7.3)
This regex is used to remove HTML tag on string
Submitted by Jordane BACHELET - 10 years ago
5

Separate words (works with spaces, dashes and underscores)

PCRE (PHP <7.3)
no description available
Submitted by marcoslhc - 10 years ago
11

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

ECMAScript (JavaScript)
This may be useful or not to test whether a given string is a valid (more or less) html color value. It matches color values such as: #123 - short hex color value #123456 - hex color value rgb(255,255,0) - rgb color value rgba(255,255,0,1.0) - rgba color value hsl(360,100%,100%) - hsl color value...
Submitted by grouch - 10 years ago
7

simple common lisp tokenizer

ECMAScript (JavaScript)
main symbols and comments are supported
Submitted by d4rw1n1s7@gmail.com - 10 years ago
13

Credit Card Expiry Date

ECMAScript (JavaScript)
Allows inserting expiry date as MM/YYYY or MM-YYYY format
Submitted by Rider - 10 years ago
0

Name

ECMAScript (JavaScript)
Simple name matching Matches english names only, you may add international characters to list of characters.
Submitted by Ehsan - 10 years ago
15

Email regex validation

ECMAScript (JavaScript)
RegEx email /^((?!\.)[\w-_.]*)(@\w+)(\.\w+(\.\w+)?)$/gim; Just playing with Reg Ex. This to validate emails in following ways ...
Submitted by https://www.linkedin.com/in/peralta-steve-atileon/ - 6 years ago (Last modified a year ago)
8

Date time Advanced

PCRE (PHP <7.3)
no description available
Submitted by Mr.Neutro - 11 years ago
10

Strip Email ID from Name

PCRE (PHP <7.3)
Use this regex to select all characters up to the "" bracket. It works across multiple lines. You can get an email list with only the IDs. This is the pattern it matches: Alpha Person Step 1 (.*) [$ Step 2 [$.$] (.*) gives you aperson@whatever.org...
Submitted by Jonathan Davidar - 10 years ago
6

Username:Password

PCRE (PHP <7.3)
Regex For finding username:password
Submitted by Ghost - 9 years ago
13

US Currency Format

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
123456...902

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
(?#skip match process when S exist, or remove optional left most target T, capture left and right part of T. Use case: if N is not exist, modify/change T to N, or create N. If any create or modify write operated, appending output N to right. skip exist:)^(?!.*S)(?# captrue prefix :)^(.*?)(?# optional target to remove:)(?:T|$)(?# captrue postfix:)(.*?)$(?# Test string: aa aaT Tcc aaTcc aaTbbTcc aaS aaTS TccS aaTccS Saa SaaT STcc SaaTcc Substitution: $1$2N Return: aaN aaN ccN aaccN aabbTccN aaS aaTS TccS aaTccS Saa SaaT STcc SaaTcc)
/
gm
Open regex in editor

Description

Skip match process when S exist, or remove optional left most target T, capture left and right part of T. Use case: if N is not exist, modify/change T to N, or create N. If any create or modify write operated, appending output N to right using subsitution "$1$2N".

Submitted by anonymous - 4 years ago