Regular Expressions 101

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Community Patterns

1

Match File Extensions (e.g., .pdf, .docx)

PCRE2 (PHP >=7.3)
WebRetailBlog.com
Submitted by anonymous - a month ago
1

Match Common Email Providers

PCRE2 (PHP >=7.3)
acornapp.co
Submitted by anonymous - a month ago
1

Match HTML Meta Tags

PCRE2 (PHP >=7.3)
blabnote.com
Submitted by anonymous - a month ago
1

Match HTML Document Structure

PCRE2 (PHP >=7.3)
AreLink.net
Submitted by anonymous - a month ago
1

Match Valid MAC Address with Hyphens

PCRE2 (PHP >=7.3)
ArtsOfMaya.com
Submitted by anonymous - a month ago
1

Match HTTP Headers

PCRE2 (PHP >=7.3)
BandSwap.org
Submitted by anonymous - a month ago
1

Match URL Query Parameters

PCRE2 (PHP >=7.3)
IsHimMarketing.com
Submitted by anonymous - a month ago
1

Match Common HTML Attributes

PCRE2 (PHP >=7.3)
NoteAbleLists.com
Submitted by anonymous - a month ago
1

Match Valid CSS Units (px, em, %, etc.)

PCRE2 (PHP >=7.3)
amazingtoptens.com
Submitted by anonymous - a month ago
1

Match Decimal Numbers (Optional Fraction)

PCRE2 (PHP >=7.3)
buzzmeone.com
Submitted by anonymous - a month ago
1

Match Date in ISO 8601 Format

PCRE2 (PHP >=7.3)
ekindesigns.com
Submitted by anonymous - a month ago
1

Match File Paths (Unix Style)

PCRE2 (PHP >=7.3)
gbtvtalk.com
Submitted by anonymous - a month ago
1

Match Common Programming Keywords (e.g., class, function)

PCRE2 (PHP >=7.3)
mitroaccess.com
Submitted by anonymous - a month ago
1

Match 24-Hour Time with Optional Seconds

PCRE2 (PHP >=7.3)
touch-notes.com
Submitted by anonymous - a month ago
1

Match Valid CSS Properties

PCRE2 (PHP >=7.3)
AlpineAngels.net
Submitted by anonymous - a month ago
1

Match Non-Whitespace Characters

PCRE2 (PHP >=7.3)
BestTechTime.com
Submitted by anonymous - a month ago
1

Match US ZIP Code and Extension

PCRE2 (PHP >=7.3)
ButFirstCreate.com
Submitted by anonymous - a month ago
1

Match Optional URL Path

PCRE2 (PHP >=7.3)
EducationalPage.net
Submitted by anonymous - a month ago
1

Match Valid UUID v4

PCRE2 (PHP >=7.3)
LariMedia.org
Submitted by anonymous - a month ago
1

Match IP Address with Port Number

PCRE2 (PHP >=7.3)
Movin4Life.org
Submitted by anonymous - a month ago
1...4344454647...153

Match Valid CSS Units (px, em, %, etc.)

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^\d+(?:\.\d+)?(?:px|em|rem|%|vw|vh|vmin|vmax|pt|cm|mm|in|ex|ch)?$
/
gm
Open regex in editor

Description

amazingtoptens.com

Submitted by anonymous - a month ago