Regular Expressions 101

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Community Patterns

3

youtube id match

PCRE (PHP <7.3)
youtube id 17 matches
Submitted by Wiliam Castilhos, Ramon Barros - 10 years ago
3

ISO 8601 date

PCRE (PHP <7.3)
Validates a date with ISO 8601 format. Source: http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/
Submitted by anonymous - 10 years ago
3

Twitch URL Regex

Python
Can grab all kinds of valid twitch URLs.
Submitted by Mio - 10 years ago
3

white space before punctuations, outside script and code tags

PCRE (PHP <7.3)
white space before punctuations, outside script and code tags
Submitted by ced - 10 years ago
3

email

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
3

Perl

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
3

po box

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
3

Fetch data between curly braces with plain text

PCRE (PHP <7.3)
This regex fetch only the data between content in curly braces (first occurrence, use preg_match_all in php, for all occurrences). This is useful for bad JSON files with wrong format or text between.
Submitted by shakaran87 - 10 years ago
3

Simple math regex

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
3

^.*(\/Summary\/).*(chelaxe\.ru).*$

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
3

US Zip Code

ECMAScript (JavaScript)
This pattern matches the US Postal Code format and captures the seperate parts; basic and +4.
Submitted by anonymous - 9 years ago
3

Invalid Unicode characters in XML

PCRE (PHP <7.3)
This pattern matches all the Unicode characters that are not allowed in an XML document. It's based on the Wikipedia article "Valid characters in XML".
Submitted by Aaron Wells - 9 years ago
3

mm/dd/yyyy Date

ECMAScript (JavaScript)
no description available
Submitted by jay johnson - 11 years ago
3

date time

Python
1/Jul/2013 03:27:12
Submitted by himel - 11 years ago
3

everything that doesn't match .gitignore at the end

PCRE (PHP <7.3)
must match: selection/nl/example.xml selection/example.xml selection/blabla.txt selection/es/ ...
Submitted by anonymous - 10 years ago
3

Italian VAT (IVA)

ECMAScript (JavaScript)
Italian VAT
Submitted by Italo - 9 years ago
3

Social Security Number (SSN)

ECMAScript (JavaScript)
tests for valid social security numbers according to the social security administration. more specifically: -disallows a group to have all 0s -disallows first group to have all 6s -disallows a ssn to begin with 9 note that this does not test for issued ssn's. that would be impossible to implement h...
Submitted by noxToken - 9 years ago
3

time format HH:mm

ECMAScript (JavaScript)
validates strings in time format HH:mm with hour in 24h format. only accepts up to 23:59
Submitted by Kelps Leite de Sousa - 9 years ago (Last modified a year ago)
3

Get Nth value (3 times)

PCRE (PHP <7.3)
capture Nth character from string, 3 times
Submitted by K. - 11 years ago
3

split URL into location-resource-params

PCRE (PHP <7.3)
Extract resource location, name and query parameters from a URL
Submitted by cebence - 11 years ago
1...881882883884885...902

Community Library Entry

3

Regular Expression
PCRE (PHP <7.3)

/
^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$
/
mgi
Open regex in editor

Description

Validates a date with ISO 8601 format.

Source: http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/

Submitted by anonymous - 10 years ago