Regular Expressions 101

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Community Patterns

2

Local url detection

PCRE (PHP <7.3)
Detect if an url is local (even if written in an absolute way)
Submitted by Jean Fenouil - 9 years ago
1

Top Level Domain (TLD)

PCRE (PHP <7.3)
Select TLD (.com, .fr ...) from url or domain
Submitted by Etienne - 9 years ago
2

Steam ID Regex

PCRE (PHP <7.3)
Will match and assign to named groups any form of identification for a steam user. Note that profile links and steamid64s are exclusive, preferring the more specific definition to the other, as well as is the case with customurls and full custom profile links.
Submitted by jokleinn - 9 years ago
1

US and Mexico Phone Numbers with Extensions

PCRE (PHP <7.3)
no description available
Submitted by Katrina - 9 years ago
2

fiddler raw to php array

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Replace Czech accents, Part 1

Python
The result of this put as input into part 2.
Submitted by Premysl Karbula - 9 years ago
2

URL with Port

ECMAScript (JavaScript)
no description available
Submitted by rkl - 9 years ago
2

Course GUID

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
2

Capture 2 digits after a dash

ECMAScript (JavaScript)
Find all '-' and capture 2 following digits
Submitted by Marie Imperial - 9 years ago
1

html

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

url

Python
no description available
Submitted by oniro - 9 years ago
1

Space replacement

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
2

DNS and lenght

PCRE (PHP <7.3)
Ideal for filter Domain with or without subdomain, and length less than 256.
Submitted by Presta-Lab - 9 years ago
2

Asterisk channel name

PCRE (PHP <7.3)
Extract channel name from Asterisk channel line
Submitted by Denis Bondar - 9 years ago
2

Standard first and/or last name

PCRE (PHP <7.3)
This just checks for case insensitive first name, last name, or both.
Submitted by Josh Garnick - 9 years ago
0

Reg Exp to Remove all special Characters

PCRE (PHP <7.3)
This regular expression removes all special characters including whitespaces which are allowed in windows path name, file name and folder name.
Submitted by Anirudh - 9 years ago
2

Search for attributes

Python
A search attribues in a image tag.
Submitted by Agustín Bouillet - 9 years ago
1

Website validation

PCRE (PHP <7.3)
Simple website validation for your casual usage
Submitted by McSwagLord - 9 years ago (Last modified a year ago)
1

Capture MSSQL tables and their potential aliases

PCRE (PHP <7.3)
Searches simple Select-From-Where style queries for tables and their aliases (if they have any). Doesn't properly handle subqueries used in place of tables!
Submitted by Tsaukpaetra - 9 years ago
1

email bunch

ECMAScript (JavaScript)
to check email bunch with commas
Submitted by jaswant singh - 9 years ago
1...6364656667...900

Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
^[a-zA-Z]\d{4}$
/
gm
Open regex in editor

Description

The CMS, who maintain these codes, describe the format as:- "HCPCS Level II codes (also known as alpha-numeric codes) consist of a single alphabetical letter followed by 4 numeric digits." (https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system) NOTE: This regex will not identify HCPCS Level I codes (AKA CPT codes) Also, some sources say the single letter ranges only from A-V (this regex follows A-Z) Finally, this regex does not match procedure modifiers, which are 2 digit codes that follow a HCPCS code (with hyphen).
(https://www.aapc.com/resources/what-are-medical-coding-modifiers) A separate regex has been created on regex101 supporting these modifiers

Submitted by Richard Baxter - 5 months ago