Regular Expressions 101

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Community Patterns

4

Simple Linux File Absolute Path Tester

PCRE (PHP <7.3)
Match simple linux file absolute path as /usr/share/my-folder/helloworld.jpg
Submitted by FLonpl6 - 10 years ago
4

url matching

ECMAScript (JavaScript)
supports all major protocols
Submitted by matheus silva - 10 years ago
3

Simple math regex

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
4

Validate a Particular File Extension

PCRE (PHP <7.3)
Validates a File Path and makes sure the correct extension is at the end.
Submitted by Andrew Morpurgo - 10 years ago
2

Password Enforcement Pattern -- trailing pattern

PCRE (PHP <7.3)
This RegEx was posted on a Ruby site as one for enforcing password pattern. I added {8,32} to limit the length of the password, even though I realize no one has passwords longer than that. Rules: at least 1 digit, 1 special character (as defined), 1 upper case and 1 lower case character, between 8 ...
Submitted by Dave Phillips - 10 years ago
2

Select all chars before last backslash

PCRE (PHP <7.3)
For selecting paths without filename
Submitted by Me! - 10 years ago
3

^.*(\/Summary\/).*(chelaxe\.ru).*$

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
1

REGEX

Python
no description available
Submitted by anonymous - 10 years ago
-3

Select a HTML table and all its innerHTML

PCRE (PHP <7.3)
no description available
Submitted by @ixzy24 - 10 years ago
4

Capture only top-level (root) domain in URL

PCRE (PHP <7.3)
no description available
Submitted by guyfawkes - 10 years ago
0

french phone number (locale format)

PCRE (PHP <7.3)
little matcher for french phone number in locale format (example: 0231348228)
Submitted by Nolwennig - 10 years ago
-2

posix

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
0

Fully Qualified Domain Name FQDN

PCRE (PHP <7.3)
Fully qualified domain name validation
Submitted by ximbs - 9 years ago
3

US Zip Code

ECMAScript (JavaScript)
This pattern matches the US Postal Code format and captures the seperate parts; basic and +4.
Submitted by anonymous - 9 years ago
3

Invalid Unicode characters in XML

PCRE (PHP <7.3)
This pattern matches all the Unicode characters that are not allowed in an XML document. It's based on the Wikipedia article "Valid characters in XML".
Submitted by Aaron Wells - 9 years ago
5

youtube url match

ECMAScript (JavaScript)
extract video id, index, play list id from youtube URL
Submitted by anonymous - 9 years ago
4

tgs data delivery .zip ID

PCRE (PHP <7.3)
Pull zip download ID from default links. Works with datadelivery and datadelivery1
Submitted by TRL - 9 years ago
4

vowel words

ECMAScript (JavaScript)
([!-\~]aeiou)
Submitted by Ipsita Mohanty - 9 years ago
5

email (tikhonov)

ECMAScript (JavaScript)
CheckEmail Login start or end simbols [._- ] .login@domain.com - fail -login@domain.com - fail _login@domain.com - fail login.@domain.com - fail...
Submitted by Tikhonov Alexander <123546.90@mail.ru> - 9 years ago (Last modified a year ago)
1

split URL in protokoll, domain, file(with path), parameter and anker

PCRE (PHP <7.3)
split URL in protokoll, domain, file(with path), parameter and anker
Submitted by Candyman1332 - 9 years ago
1...1112131415...900

Community Library Entry

1

Regular Expression
Rust

r#"
(?:(?:import|export)[^`'"]*from\s+[`'"])(?<from>[^`'"./][^`'"]*)(?:[`'"])|(?:\bimport)(?:\s+|\s*\(\s*)(?:[`'"])(?<plain>[^`'"./][^`'"]*)(?:[`'"])
"#
gm
Open regex in editor

Description

This regex can be used on a JavaScript/TypeScript file to find imports from third-party packages. This is useful for determining what to put in dependencies/peerDependencies. This is a Rust regex, which makes it easy to use with rg (ripgrep). Pro tip: combine rg with sort -u to get a list of all packages for your JS/TS project!

Based on a similar PCE2 regex

Submitted by Nikita Karamov - 4 months ago