Regular Expressions 101

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Community Patterns

-2

Parsing result of SQL Server version (SELECT @@VERSION)

.NET 7.0 (C#)
Parses MS SQL Server version returned from executing SELECT @@version
Submitted by M Rivas - 2 years ago
-2

PHP Serialization String Validator

PCRE (PHP <7.3)
PHP serialize / unserialize __sleep __wakeup __serialize __unserialize
Submitted by Abdullah Pazarbasi - 2 years ago
-2

rustyms: pro forma single modification

Rust
The regex to match a single pro forma modification with all its intricacies.
Submitted by Douwe Schulte - 2 years ago
-2

Ascending and Descending order

Java 8
This regex is to match Ascending or descending order of 8 digit number
Submitted by anonymous - a year ago
-2

Codeforces 1800A Solution

ECMAScript (JavaScript)
By inserting this regex in a programming language to test it against Codeforces 1800A you'll solve the task
Submitted by EntityPlantt - a year ago
-1

Twitter Hashtags

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-1

regex on paintkits

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-1

Match the ID on individual Vimeo URLs

PCRE (PHP <7.3)
no description available
Submitted by Josh K - 11 years ago
-1

Finds <font> tag

PCRE (PHP <7.3)
Useful for cleaning old html code from tags
Submitted by anonymous - 11 years ago
-1

Simple replacing. Replaced first folder in path to file.

PCRE (PHP <7.3)
Used with Java regexp. F.e. you can use replaceAll("regexp", "filePath").
Submitted by E.ch. - 11 years ago
-1

Find image style

ECMAScript (JavaScript)
style img
Submitted by anonymous - 11 years ago
-1

Twitter #hashtags

Python
Using the twitter API, take a tweet object and find & link #tags to embed in HTML
Submitted by @triplec1988 - 11 years ago
-1

Substitutin

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-1

email

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
-1

Match inside square brackets without brackets

PCRE (PHP <7.3)
no description available
Submitted by DanSkeel - 11 years ago
-1

for checking code number 1111/111111111

Python
no description available
Submitted by dejv - 10 years ago
-1

Find html tag opening for tag with specific class.

PCRE (PHP <7.3)
I needed a regex to find the opening location of an html tag with a specific class. It is ugly, and it relies on many false assumtions, yet be honest, this will work in most cases. Also checks if the tag is in a line that is commented out. Again, we wont know if it is commented out if it is done on ...
Submitted by Stack overflow Superspy - 10 years ago
-1

regex test

PCRE (PHP <7.3)
testing the string abc xyx 12 13 a a b
Submitted by Alien Coders - 10 years ago (Last modified a year ago)
-1

sfafagergfwefe323

Python
no description available
Submitted by anonymous - 10 years ago
-1

street address Checker and fetcher

PCRE (PHP <7.3)
Check provided street address is valid or not and also fetch it's all components.
Submitted by Dilip Borad - 10 years ago
1...910111213...902

Community Library Entry

-1

Regular Expression
PCRE (PHP <7.3)

/
^(?: (?:[\pL\pN\pS-\.])+(?:\.?(?:[\pL]|xn\-\-[\pL\pN-]+)+) # a domain name | # or \d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3} # a IP address | # or \[ (?:(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){6})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:::(?:(?:(?:[0-9a-f]{1,4})):){5})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){4})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,1}(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){3})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,2}(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){2})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,3}(?:(?:[0-9a-f]{1,4})))?::(?:(?:[0-9a-f]{1,4})):)(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,4}(?:(?:[0-9a-f]{1,4})))?::)(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,5}(?:(?:[0-9a-f]{1,4})))?::)(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,6}(?:(?:[0-9a-f]{1,4})))?::)))) \] # a IPv6 address )$
/
ixu
Open regex in editor

Description

Validates the format of IPv4/IPv6 hostnames as well as domain names.

Submitted by anonymous - 9 years ago