Regular Expressions 101

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Community Patterns

19

Cron schedule

Recommended
PCRE (PHP <7.3)
Validate cron lines (even the ones commented out)
Submitted by anonymous - 7 years ago
24

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 4 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
16

Strict Password Validator

ECMAScript (JavaScript)
This regex matches only when all the following are true: password must contain 1 number (0-9) password must contain 1 uppercase letters password must contain 1 lowercase letters password must contain 1 non-alpha numeric number...
Submitted by qho - 6 years ago
(Last modified 4 months ago)
11

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 - 10 months ago
(Last modified 4 months ago)
8

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 4 months ago)
8

Fiddler raw body to PHP array

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

Email regex validation

ECMAScript (JavaScript)
RegEx email /^((?!\.)[\w-_.]*)(@\w+)(\.\w+(\.\w+)?)$/gim; Just playing with Reg Ex. This to validate emails in following ways ...
Submitted by https://www.linkedin.com/in/peralta-steve-atileon/ - 5 years ago
(Last modified 4 months ago)
6

best youtube id match ( iframe embed replace ready )

Recommended
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
16

Email (RFC2822)

Recommended
ECMAScript (JavaScript)
Email address compliant with RFC2822
Submitted by Jago - 8 years ago
10

UUID

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
10

youtube url match

ECMAScript (JavaScript)
extract video id, index, play list id from youtube url
Submitted by anonymous - 8 years ago
7

CSS Color Matcher

ECMAScript (JavaScript)
Pattern matching and extracting color code formats using RegEx. https://github.com/Kyza/color-regex/
Submitted by Kyza - 4 months ago
22

grab valid css rules and properties

ECMAScript (JavaScript)
no description available
Submitted by Pavel Dominguez - 8 years ago
11

remove comments from php code

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
14

us postal/zip

ECMAScript (JavaScript)
no description available
Submitted by jay johnson - 10 years 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 id grabber

PCRE (PHP <7.3)
grabs the ID for the regex101.com permalink to code
Submitted by chris mccoy - 10 years ago
(Last modified 4 months ago)
13

Match Gmail Email

Recommended
PCRE (PHP <7.3)
Match Gmail Email
Submitted by Óscar Enríquez - 9 years 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
1234...766

Get path from any text

11

Regular Expression
Recommended
PCRE2 (PHP >=7.3)

/
(?<opening>\b(?<montage>[a-zA-Z]:[\/\\])|[\/\\][\/\\](?<!http:\/\/)(?<!https:\/\/)(?>[?.][\/\\](?:[^\/\\<>:"|?\n\r ]+[\/\\])?(?&montage)?|(?!(?&montage)))|%\w+%[\/\\]?)(?:[^\/\\<>:"|?\n\r ,'][^\/\\<>:"|?\n\r]*(?<![ ,'])[\/\\])*(?:(?=[^\/\\<>:"'|?\n\r;, ])(?:(?:[^\/\\<>:"|?\n\r;, .](?: (?=[\w\-]))?(?:\*(?!= ))?(?!(?&montage)))+)?(?:\.\w+)*)|(?:'(?&opening)(?=.*'\W|.*'$)(?:[^\/\\<>:'"|?\n\r]+(?:'(?=\w))?[\/\\]?)*')|"(?&opening)(?=.*")(?:[^\/\\<>:"|?\n\r]+[\/\\]?)*"
/
g
Open regex in editor

Description

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Submitted by nitrateag - 10 months ago
(Last modified 4 months ago)