Regular Expressions 101

Order By

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

Community Patterns

4

Skype ConversationText Extraction

PCRE (PHP <7.3)
When you copy a skype conversation and paste it in a text area then it includes timestamps, User's name and whether or not the message had been edited. This matches all of those in seperate groups for easy substitution
Submitted by Zalatos - 9 years ago
4

Get image tag attributes

PCRE (PHP <7.3)
no description available
Submitted by Agustín Bouillet - 8 years ago
5

ipv6 Validation

PCRE (PHP <7.3)
Handle all condition for ipv6 example: 1) FE80::8329 2) FE80::FFFF:8329 3) FE80::B3FF:FFFF:8329 4) FE80::0202:B3FF:FFFF:8329...
Submitted by Lim Yew Teck, Nicholas - 9 years ago
5

Separate words (works with spaces, dashes and underscores)

PCRE (PHP <7.3)
no description available
Submitted by marcoslhc - 10 years ago
4

url

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

phone

Python
matches: + example: +52 33 3884 7720 +1 770 343 5788
Submitted by miqui - 10 years ago
4

Task 1

PCRE (PHP <7.3)
Finds a happy smile, except sad one
Submitted by Kovalev Evgeny - 11 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 - 9 years ago
4

Mobile phone russia

ECMAScript (JavaScript)
Submitted by Johhny - 9 years ago
4

Element's Attribute Value in XML (simple)

PCRE (PHP <7.3)
Simple regular expression for extracting attribute value of the element in XML-string. Attribute value should be in quotes.
Submitted by Nikita Danilov - 10 years ago
1

Validate alphanumeric and numeric range

PCRE (PHP <7.3)
For Validating alphanumeric and numeric range
Submitted by anonymous - 10 years ago
4

Remove HTML tags

PCRE (PHP <7.3)
This regex is used to remove HTML tag on string
Submitted by Jordane BACHELET - 10 years ago
0

URL matching

PCRE (PHP <7.3)
Complete url matching with storage of various parameters
Submitted by hjpotter92 - 10 years ago
4

Credit Card Number

PCRE (PHP <7.3)
Validates Credit Card Numbers of different type. Supports Visa, MasterCard, American Express, Diners Club, Discover and JCB Taken from http://www.regular-expressions.info/creditcard.html If you want to support only a particular type, customise it based on following....
Submitted by Ehsan - 9 years ago
4

Strip out domain extensions except for Microsoft .net technologies.

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 12 years ago
4

YouTube Grabber Cleanup

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
4

Match Brackets and anything inside

ECMAScript (JavaScript)
no description available
Submitted by andreayang - 11 years ago
4

html tags

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
4

Strip multi-line (star) comments from JavaScript, while leaving any CDATA sections intact.

PCRE (PHP <7.3)
This regular expression removes multi-line (star) comments from JavaScript, while leaving any CDATA sections intact. Use the global (g) modifier to match them all (if you plan to use PHP's preg_replace, the g modifier is not necessary), and use the (s) modifier to make dots match newlines (this will...
Submitted by Dane MacMillan - 12 years ago
4

Prime number regex

PCRE (PHP <7.3)
no description available
Submitted by originally "Abigail", comp.lang.perl.misc - 11 years ago
1...1415161718...900

Community Library Entry

4

Regular Expression
PCRE (PHP <7.3)

/
^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|6(?:011|5[0-9]{2})[0-9]{12}(?:2131|1800|35\d{3})\d{11})$
/
gm
Open regex in editor

Description

Validates Credit Card Numbers of different type. Supports Visa, MasterCard, American Express, Diners Club, Discover and JCB

Taken from http://www.regular-expressions.info/creditcard.html

If you want to support only a particular type, customise it based on following.

^(?:4[0-9]{12}(?:[0-9]{3})? # Visa | 5[1-5][0-9]{14} # MasterCard | 3[47][0-9]{13} # American Express | 3(?:0[0-5]|[68][0-9])[0-9]{11} # Diners Club | 6(?:011|5[0-9]{2})[0-9]{12} # Discover | (?:2131|1800|35\d{3})\d{11} # JCB )$

Submitted by Ehsan - 9 years ago