Regular Expressions 101

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Community Patterns

9

Youtube ID match

PCRE (PHP <7.3)
This regex will match any Youtube video ID thrown at it and return one capturing group containing the ID.
Submitted by Jacob Overgaard - 11 years ago
2

Split Date

PCRE (PHP <7.3)
no description available
Submitted by Arun Kumar Sekar - 11 years ago
2

sample

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
1

Number, comma and dot

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago (Last modified a year ago)
1

js

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

Removing an XML Nodes namespace prefix from a XML string wit

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-2

Remove namespaces

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
4

Match Brackets and anything inside

ECMAScript (JavaScript)
no description available
Submitted by andreayang - 11 years ago
1

saja

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
0

Dotted-decimal IPv4 address

PCRE (PHP <7.3)
Validates an IPv4 address for use as a URI host as defined in RFC-3986.
Submitted by ezzatron - 11 years ago
1

{if}{endif} matcher

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
1

get image with classname

ECMAScript (JavaScript)
no description available
Submitted by @cloverink - 11 years ago
1

why this matches?

PCRE (PHP <7.3)
no description available
Submitted by romans - 11 years ago
-1

Substitutin

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
0

negated special characters

PCRE (PHP <7.3)
no description available
Submitted by Rimjhim - 11 years ago
237

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
0

quoted string possibly containing escaped delimiter

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
1

bridal quality

PCRE (PHP <7.3)
no description available
Submitted by mine - 11 years ago
-1

Twitter #hashtags

Python
Using the twitter API, take a tweet object and find & link #tags to embed in HTML
Submitted by @triplec1988 - 11 years ago
1

Anom

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
1...895896897898899900

Community Library Entry

0

Regular Expression
PCRE2 (PHP >=7.3)

/
\.-?[_a-zA-Z]+[_a-zA-Z0-9-]*\s*\{(.*?)}
/
gm
Open regex in editor

Description

Regex to find CSS Class Styles

Submitted by JR - 2 years ago