Regular Expressions 101

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10

best youtube id match ( iframe embed replace ready )

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PCRE (PHP <7.3)
MATCH ANY YOUTUBE ID author : mi-ca v1.0 – 2017.03.08 This Regex match any youtube url and grab the ID. Embed ready √ --...
Submitted by mi-ca.ch - 5 years ago
24

Cron schedule

Recommended
PCRE (PHP <7.3)
Validate cron lines (even the ones commented out)
Submitted by anonymous - 8 years ago
16

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 - a year ago (Last modified 9 months ago)
25

Parsing browser User Agents

PCRE (PHP <7.3)
From a (fairly large) list of User Agent strings, extract the OS, Browser, and Device Type.
Submitted by OnlineCop - 9 years ago (Last modified 9 months ago)
10

Conventional Commits validation

PCRE (PHP <7.3)
This regex prevents the writing of non-standard conventional commits. I'm available on my github
Submitted by Krisque - 2 years ago (Last modified 9 months ago)
14

RFC3339 DateTime

Recommended
PCRE (PHP <7.3)
Validates a RFC3339 DateTime format. Does not validates the Data
Submitted by anonymous - 8 years ago
9

Fiddler raw body to PHP array

PCRE (PHP <7.3)
no description available
Submitted by garsax - 8 years ago
10

Find Reddit Threads

Python
Simply searches for the thread-id in any kind of valid reddit-URL.
Submitted by Mio - 9 years ago
10

entity

Python
no description available
Submitted by anonymous - 8 years ago
10

IPv4 Validator

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago (Last modified 8 months ago)
8

extract subdomain(if available) or domain from URL

Python
This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL
Submitted by trevi@twanda.com - 8 years ago
11

remove comments from php code

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
81

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 9 months ago)
9

Fixo LDN CSP e SEM CSP

PCRE (PHP <7.3)
no description available
Submitted by Marcos Müller - 9 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 - 10 years ago (Last modified 7 days ago)
236

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 - 10 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 - 9 years ago
13

Match Gmail Email

Recommended
PCRE (PHP <7.3)
Match Gmail Email
Submitted by Óscar Enríquez - 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 - 9 years ago
123...694

Capture digits and extension of North American phone number (North American Numbering Plan)

1

Regular Expression
PCRE (PHP <7.3)

/
(?:[\+1\(-. ]{1,})?(?<ac>[2-9]{1}[0-9]{2})(?:[\(-. ]{1,})?(?<coc>[2-9]{1}[0-9]{2})(?:[\(-. ]{1,})?(?<sn>[0-9]{4})(?:\d{0,})?(?:\s*(?:#|x\.?|extension|ext\.?)\s*)?(?<ext>[a-zA-Z0-9. ]{0,})$
/
gm
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Description

  1. strips Country Code 1 &/or token
  2. ${ac} or ${1} captures three-digit NXX Numbering Plan Area Code/National Destination Code
  3. strips separators
  4. ${coc} or ${2} captures three-digit NXX Central Office Code
  5. strips separators
  6. ${sn} or ${3} captures four-digit XXXX Station Number/Subscriber Number
  7. strips extra digits in vanity phone numbers
  8. strips extension delimiter
  9. ${ext} or ${4} captures n-digit extension
Submitted by anonymous - 4 years ago