Regular Expressions 101

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Community Patterns

Search among 2,680 community submitted regex patterns...

Match Date in ISO 8601 Format

Regular Expression
PCRE2 (PHP >=7.3)

^(?:19|20)\d\d-(?:0[1-9]|1[0-2])-(?:0[1-9]|[12][0-9]|3[01])(?:T(?:[01][0-9]|2[0-3]):[0-5][0-9](?::[0-5][0-9])?(?:\.\d+)?(?:[+-][01][0-9]:[0-5][0-9]|Z)?)?$

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Description

ekindesigns.com

Submitted by anonymous - a month ago

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Community Patterns

Match Valid UUID v4

Match Optional URL Path

Match US ZIP Code and Extension

Match Non-Whitespace Characters

Match Valid CSS Properties

Match 24-Hour Time with Optional Seconds

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

Match File Paths (Unix Style)

Match Date in ISO 8601 Format

Match Decimal Numbers (Optional Fraction)

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

Match Common HTML Attributes

Match URL Query Parameters

Match HTTP Headers

Match Valid MAC Address with Hyphens

Match HTML Document Structure

Match HTML Meta Tags

Match Common Email Providers

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

Match Phone Numbers with Country Code

Match Date in ISO 8601 Format

Regular ExpressionPCRE2 (PHP >=7.3)

Description

Regular Expression
PCRE2 (PHP >=7.3)