Regular Expressions 101

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Community Patterns

8

IP Address (with 0s)

ECMAScript (JavaScript)
Matches all valid IP addresses from 0.0.0.0 to 255.255.255.255
Submitted by Ryan Plummer - 9 years ago
84

Distinguish torrent files (series vs movies)

Python
A neat regex for finding out whether a given torrent name is a series or a movie. Returns the full name of the series with the separator needed to make it pretty (ie, replace it with space or what you want). Also returns the season number or the year for the movie/series, depending on what was prev...
Submitted by Firas Dib - 10 years ago (Last modified a year ago)
15

us postal/zip

ECMAScript (JavaScript)
no description available
Submitted by jay johnson - 11 years ago
13

US Currency Format

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

Fixo LDN CSP e SEM CSP

PCRE (PHP <7.3)
no description available
Submitted by Marcos Müller - 10 years ago
483

regex101.com permalink id grabber

PCRE (PHP <7.3)
Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.
Submitted by chris mccoy - 11 years ago (Last modified 8 months ago)
238

Matching email addresses per RFC5322

PCRE (PHP <7.3)
The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.
Submitted by Michael Musson - 11 years ago
10

MikroTik FireWall

PCRE (PHP <7.3)
Regex used in Splunk to extract fields from Mikrotik FW. NOTES: Mikrotik must be configured to use "BSD Syslog" format FW rules must add, as log prefix, the action: drop accep...
Submitted by HappyIdeasMaker - 10 years ago
10

If-Then-Else Conditionals

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
10

money: either 0 or 2 dp

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
11

remove comments from php code

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
13

Match Gmail Email

Recommended
PCRE (PHP <7.3)
Match Gmail Email
Submitted by Óscar Enríquez - 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
12

Full url parse, domain, path, params

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
5

Find All Python imports

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
5

relative to absolute

PCRE (PHP <7.3)
relative to absolute
Submitted by xp_prg - 10 years ago
5

Variable name of code

PCRE (PHP <7.3)
To get a variable name from a source code: The variable name is before the '=' (equal sign) This is the way to detect. Problem: Only 1 variable can get from 1 line. Unfortunately, this can get variable between after "//" and before ";" too. I made this for fake script debugger. Just get variable f...
Submitted by Setsuna - 9 years ago
5

Codice fiscale italiano

PCRE (PHP <7.3)
Oltre a supportare le omocodie controlla in modo restrittivo il carattere relativo al mese di nascita
Submitted by Aldo Medri - 9 years ago
5

import url image

Python
import url image
Submitted by bartimeys - 9 years ago
5

look for any $_POST['name']

PCRE (PHP <7.3)
if you are as lazy as me and want to replace every "=$_POST['name'];" using Dreamweaver or any development tool that allows using regular expressions to search in current file/document.
Submitted by Kevinator - 9 years ago
1234...902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
^\s*([a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12})|((([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,})))\s*$
/
Open regex in editor

Description

no description available

Submitted by anonymous - 6 years ago