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
5

parsing CSV file

PCRE (PHP <7.3)
It correctly handles simple values, empty values, and quoted values with commas inside.
Submitted by Viktor Lova aka nsinreal - 10 years ago
3

Twitch URL Regex

Python
Can grab all kinds of valid twitch URLs.
Submitted by Mio - 10 years ago
1

4-digit numeric w/o leading zero and no repeat digits

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
-1

UK Postcode Validation

ECMAScript (JavaScript)
Matches all valid, current UK Postcodes, including Girobank and non-geographic postcodes, irrespective of whether they contain a space. It does not include overseas territories. Adapted from the BS7666 postcode rules at http://www.cabinetoffice.gov.uk/govtalk/schemasstandards/e-gif/datastandards/add...
Submitted by Ti Marner - 10 years ago
6

Replace caracters not inside HTM tags

ECMAScript (JavaScript)
Select a character (or string) ingnoring if that element is inside the HTML tags. Useful to apply html tags using replace.
Submitted by Alex5B - 10 years ago
1

french phone number (intl format)

PCRE (PHP <7.3)
little matcher for french phone number in international format (example: +33231348228)
Submitted by Nolwennig - 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
1

IP v4 format validation

PCRE (PHP <7.3)
Valid 0.0.0.0 1.1.1.1 101.101.101.101 255.255.255.255 156.0.1.10...
Submitted by NexRezzo - 10 years ago
1

Indian Phone Numbers!

PCRE (PHP <7.3)
This is not supported in Javascript! Works well for php, python. Examples: +91-8800119719, 08800119719, 8800119719, +918800119719 etc.
Submitted by Prateek Jain - 10 years ago
4

IPV4 address validation using recursion

PCRE (PHP <7.3)
Validate IPv4 addresses using PCRE's recursion patterns. A shorter but less efficient alternative to https://regex101.com/r/wZ6oY5/1
Submitted by Captain Haddock - 10 years ago
3

email

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
5

Latitude,Longitude fetcher

PCRE (PHP <7.3)
Useful to work with GoogleMap API.
Submitted by anonymous - 9 years ago
2

postgesql

Python
no description available
Submitted by anonymous - 9 years ago
5

Password strength

ECMAScript (JavaScript)
Regular expression for password validation Rules: 8-120 chars no spaces must contain at least one a-z char must contain at least one A-Z char...
Submitted by @razvanz - 9 years ago
3

Perl

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

dd/mm/yyyy validation regexp

Python
no description available
Submitted by uknnown - 9 years ago
0

get params from json

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
4

Mobile phone russia

ECMAScript (JavaScript)
Submitted by Johhny - 9 years ago
1...910111213...902

Community Library Entry

1

Regular Expression
Python

r"
\b(?P<date> (?P<day> (?:(?:0[1-9]|[12]\d|30)(?=[- :\.\/](?:04|06|09|11)))| (?:(?:0[1-9]|[12]\d|3[01])(?=[- :\.\/](?:01|03|05|07|08|10|12)))| (?:(?:0[1-9]|[12]\d)(?=[- :\.\/]02[- :\.\/]\d\d(?:([02468][048])|([13579][26]))) (?![- :\.\/]02[- :\.\/](?:([2468][1235679])|([13579][01345789])00)))| (?:(?:0[1-9]|1\d|2[0-8])(?=[- :\.\/]02[- :\.\/])) )[- :\.\/] (?P<month>0[1-9]|1[012])[- :\.\/] (?P<year>[1-9]\d{3}) )\b
"
gmx
Open regex in editor

Description

1000-9999 years '-', ' ', ':', '.', or '/' may be user as divider

Submitted by furren - 9 months ago