Regular Expressions 101

Order By

Sponsors
There are currently no sponsors. Become a sponsor today!

Community Patterns

1

Match Non-Digit Characters

PCRE2 (PHP >=7.3)
TechnicalBudd.com
Submitted by anonymous - 3 months ago
1

Match Specific File Extensions (e.g., .jpg, .png)

PCRE2 (PHP >=7.3)
NewIntrEnds.com
Submitted by anonymous - 3 months ago
1

Match Username with Special Characters

PCRE2 (PHP >=7.3)
NetBusinessZone.com
Submitted by anonymous - 3 months ago
1

Match HTML Tags with Attributes

PCRE2 (PHP >=7.3)
DoWiesPlace.com
Submitted by anonymous - 3 months ago
1

Match Credit Card Numbers (Visa, MasterCard)

PCRE2 (PHP >=7.3)
DesignMagazines.net
Submitted by anonymous - 3 months ago
1

Match Decimal Numbers with Thousand Separator

PCRE2 (PHP >=7.3)
BusinessMagHub.com
Submitted by anonymous - 3 months ago
1

Match Times in 12-Hour Format (HH AM/PM)

PCRE2 (PHP >=7.3)
onlinebusinessshop.net
Submitted by anonymous - 3 months ago
1

Match US ZIP Code with Optional Extension

PCRE2 (PHP >=7.3)
miyuediy.net
Submitted by anonymous - 3 months ago
1

Match Hexadecimal Strings regex

PCRE2 (PHP >=7.3)
hackingtechnicalinterview.com
Submitted by anonymous - 3 months ago
1

Match SQL Comments

PCRE2 (PHP >=7.3)
fluiddigitalmedia.com
Submitted by anonymous - 3 months ago
1

Match Passwords with Minimum Length and Special Characters

PCRE2 (PHP >=7.3)
SimsWriters.com
Submitted by anonymous - 3 months ago
1

Match Valid HTML5 Color Names

PCRE2 (PHP >=7.3)
RascalJournal.com
Submitted by anonymous - 3 months ago
1

Match Legal HTML Tags

PCRE2 (PHP >=7.3)
NewNulled.com
Submitted by anonymous - 3 months ago
1

Match IPv6 Address

PCRE2 (PHP >=7.3)
Movin4Life.org
Submitted by anonymous - 3 months ago
0

Match IP Address with Port Number

PCRE2 (PHP >=7.3)
Movin4Life.org
Submitted by anonymous - 3 months ago
1

Match Valid UUID v4

PCRE2 (PHP >=7.3)
LariMedia.org
Submitted by anonymous - 3 months ago
1

Match Optional URL Path

PCRE2 (PHP >=7.3)
EducationalPage.net
Submitted by anonymous - 3 months ago
1

Match US ZIP Code and Extension

PCRE2 (PHP >=7.3)
ButFirstCreate.com
Submitted by anonymous - 3 months ago
1

Match Non-Whitespace Characters

PCRE2 (PHP >=7.3)
BestTechTime.com
Submitted by anonymous - 3 months ago
1

Match Valid CSS Properties

PCRE2 (PHP >=7.3)
AlpineAngels.net
Submitted by anonymous - 3 months ago
1...7891011...901

Community Library Entry

7

Regular Expression
ECMAScript (JavaScript)

/
^\d{4}-(((0[13578]|1[02])-(0[1-9]|[12]\d|3[0-1]))|(02-(0[1-9]|[12]\d))|((0[469]|11)-(0[1-9]|[12]\d|30)))$
/
gm
Open regex in editor

Description

Besides leap year handling, this takes care of date validation in the yy-mm-dd format.

Submitted by anonymous - 9 years ago