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Title	Test Details Pattern Title
Expression	^([A-Z|a-z|&]{3}\d{2}((0[1-9]|1[012])(0[1-9]|1\d|2[0-8])|(0[13456789]|1[012])(29|30)|(0[13578]|1[02])31)|([02468][048]|[13579][26])0229)(\w{2})([A|a|0-9]{1})$|^([A-Z|a-z]{4}\d{2}((0[1-9]|1[012])(0[1-9]|1\d|2[0-8])|(0[13456789]|1[012])(29|30)|(0[13578]|1[02])31)|([02468][048]|[13579][26])0229)((\w{2})([A|a|0-9]{1})){0,3}$
Description	Registro Federal de Contribuyentes (RFC) , used in Mexico as a unique set of caracters for a person or corporation registration . Registro Federal de Contribuyentes utilizado en Mexico para el registro en hacienda.
Matches	ABCD790419 | ABC790419aa1 | ABCD790419AB1
Non-Matches	AB790419 | A12790419 | ABC791332
Author	Rating: Leo Hinojosa

Title	Test Details Pattern Title
Expression	[v,V,(\\/)](\W|)[i,I,1,l,L](\W|)[a,A,@,(\/\\)](\W|)[g,G](\W|)[r,R](\W|)[a,A,@,(\/\\))]
Description	Spam trap Catches many and many way to write viagra (replacing letters with similar chars, spacing chars with one space, etc).
Matches	Viagra | v1@G R /\ | \/iagr@
Non-Matches	viaagra | vi agra | v1 gra
Author	Rating: Sante Boscolo

Title	Test Details Pattern Title
Expression	^[\.\wæøå-]+@([a-zæøå0-9]+([\.-]{0,1}[a-zæøå0-9]+|[a-zæøå0-9]?))+\.[a-z]{2,6}$
Description	Well it pretty much accepts all kinds of users, about the domain i didn't write it special for any TLD so there's no length defined, ohh and it accepts some IDN stuff
Matches	[email protected] | [email protected] | [email protected]
Non-Matches	[email protected] | [email protected] | aaaaaaa@
Author	Rating: Andreas Næsager

Title	Test Details Pattern Title
Expression	^([A-Za-z0-9]\s?)+([,]\s?([A-Za-z0-9]\s?)+)*$
Description	This regular expression can be used to parse a comma delimited string. Leading whitespaces (at the beginning of the entire string) and ending commas are not acceptable. Any combination of letters and numbers with zero or one white space between them are acceptable. Note: To change the delimiter, simply replace the comma in the square brackets to the delimiter of choice.
Matches	123, 4567, 8901 | abc, defghi, jklmn | abc123
Non-Matches	abc123 | abc123, | ,abc123
Author	Rating: Rehan Azam

Title	Test Details Pattern Title
Expression	^((4\d{3})|(5[1-5]\d{2})|(6011))-?\d{4}-?\d{4}-?\d{4}|3[4,7]\d{13}$
Description	Matches major credit cards including: Visa (length 16, prefix 4), Mastercard (length 16, prefix 51-55), Discover (length 16, prefix 6011), American Express (length 15, prefix 34 or 37). All 16 digit formats accept optional hyphens (-) between each group of four digits.
Matches	6011-1111-1111-1111 | 5423-1111-1111-1111 | 341111111111111
Non-Matches	4111-111-111-111 | 3411-1111-1111-111 | Visa
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^(?n:(?<lastname>(St\.\ )?(?-i:[A-Z]\'?\w+?\-?)+)(?<suffix>\ (?i:([JS]R)|((X(X{1,2})?)?((I((I{1,2})|V|X)?)|(V(I{0,3})))?)))?,((?<prefix>Dr|Prof|M(r?|(is)?)s)\ )?(?<firstname>(?-i:[A-Z]\'?(\w+?|\.)\ ??){1,2})?(\ (?<mname>(?-i:[A-Z])(\'?\w+?|\.))){0,2})$
Description	This pattern captures &lt;lastname&gt;&lt;suffix&gt;,&lt;prefix&gt;&lt;firstname&gt;&lt;mname&gt; Names must start with a capital letter. Last names may be hyphenated. First names can have two parts ie &quot;Mary Anne&quot; if there are more than two names after the comma. Suffixes can number up to XXX (30th). Standard prefixes are optional (Mr Miss)
Matches	O'Brien, Miles | McDonald,Mary Ann Alison | Windsor-Smith,Barry
Non-Matches	jones, john
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	^([51|52|53|54|55]{2})([0-9]{14})$
Description	Validate against any mastercard number. All MC's start with a number between 51 and 55 and are followed by 14 other numbers.
Matches	5125632154125412 | 5225632154125412 | 5525632154125412
Non-Matches	5625632154125412 | 4825632154125412 | 6011632154125412
Author	Rating: Jeff Johns

Title	Test Details Pattern Title
Expression	<[^>]+>
Description	This expression finds all opening and closing tags. Good for stripping out tags in an XML or HTML document. I used it to clean-up HTML documents that had XML mixed in. It found all the tags, then I just deleted the ones that weren't standard. I used it in HOMESITES extended find.
Matches	<html> | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> | <
Non-Matches	Any plain old text | http://www.regexlib.com/Add.aspx | xml>
Author	Rating: X Man

Title	Test Details Pattern Title
Expression	^[0-9]{1,}(,[0-9]+){0,}$
Description	It could be use to validate html input form (checkbox, optionbox, selectbox) when you have multiple numeric value under one field name. The validation is that the user have at lease chose one or more!
Matches	1111 | 47,26,2,1,1111,12 | 25,1245,2122,23232
Non-Matches	111, | 1a1,111,1212,23 | 11aa,aaa,asas,asa
Author	Rating: Nicholas Rathwell

Title	Test Details Pattern Title
Expression	\w{5,255}
Description	This is User Name & Password validation expression. It does not allow blank spaces as well as special characters like $#%@&*(){}+
Matches	aa123_ter12 | aa4587 | 784566
Non-Matches	123*-/ mksj
Author	Rating: Chandan Agarwal

Title	Test Details Pattern Title
Expression	"((\\")|[^"(\\")])+"
Description	Matches quoted string, using \" as an escape to place quotes in the string
Matches	"test" | "escape\"quote" | "\""
Non-Matches	test | "test | "test\"
Author	Rating: Alessandro Vergani

Title	Test Details Combined UK Vehicle Registration
Expression	^([A-Z]{3}\s?(\d{3}|\d{2}|d{1})\s?[A-Z])|([A-Z]\s?(\d{3}|\d{2}|\d{1})\s?[A-Z]{3})|(([A-HK-PRSVWY][A-HJ-PR-Y])\s?([0][2-9]|[1-9][0-9])\s?[A-HJ-PR-Z]{3})$
Description	UK vehicle registration system. This is the obvious combination of two previous expressions posted here, to merge the older system with the current system.
Matches	ABC 123 A | A 123 ABC | AB 12 ABC
Non-Matches	AB 123 C | A 123 AB | AB 12 AB
Author	Rating: Not yet rated. Amos Hurd

Title	Test Details Pattern Title
Expression	(Ù|Ú|Û|Ü|ù|ú|û|ü|µ|U|u|µ|µ|Ù|Ú|Û|Ü|Ù|Ú|Û|Ü|ù|ú|ûü|ù|ú|û|ü)
Description	Spam stopper, catches any non english characters for u used in flocks
Matches	Üsúally $40 | únless you act | µpper limit
Non-Matches	Usually $40 | unless you act | upper limit
Author	Rating: Not yet rated. Alanski Perryman

Title	Test Details Pattern Title
Expression	^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,15}$
Description	Password matching expression. Password must be at least 8 characters, no more than 15 characters, and must include at least one upper case letter, one lower case letter, and one numeric digit.
Matches	aaaa1234AAAA | 12aaAA12 | aaaaa12345AAAAA
Non-Matches	aaaaa123456AAAAA | 12aaAA1 | 12aaaa12
Author	Rating: Not yet rated. Jeff U

Title	Test Details Pattern Title
Expression	(¡|Ì|Í|Î|Ï|ì|í|î|ï|!|¡|¡|¹|¹|¦|Ì|Í|Î|Ï|ì|í|ï|Ì|Í|Î|Ï|ì|í|î|ï|I|i)
Description	Spam stopper, catches any non english characters for i used in flocks
Matches	ínvest today | Îs your | ïnto debt
Non-Matches	invest today | Is your | into debt
Author	Rating: Not yet rated. Alanski Perryman

Title	Test Details Pattern Title
Expression	.\{\d\}
Description	String formater matching.
Matches	The quick {0} fox {1} over the lazy dog.
Non-Matches	The {b} is wrong
Author	Rating: Not yet rated. Sean Ziencik

Title	Test Details Pattern Title
Expression	(Ò|Ó|Ô|Õ|Ö|Ø|ð|ò|ó|ô|õ|ö|ø|0|O|o|Ò|Ó|Ô|Õ|Ö|Ø|Ò|Ó|Ô|Õ|Ö|Ø|ò|ó|ô|õ|ò|ó|ô|õ|ö|ø)
Description	Spam stopper, catches any non english characters used for o in flocks
Matches	Ônly $20 | Øne tô Óne | gõing today
Non-Matches	Only $20 | One to one | going today
Author	Rating: Not yet rated. Alanski Perryman

Title	Test Details Older UK Vehicle Registration
Expression	^([A-Z]{3}\s?(\d{3}|\d{2}|d{1})\s?[A-Z])|([A-Z]\s?(\d{3}|\d{2}|\d{1})\s?[A-Z]{3})$
Description	UK vehicle registration system prior to September 2001. Allows both older suffix and the later prefix formats in simple form, with optional spaces.
Matches	ABC123A | A 123 ABC
Non-Matches	AB123A | A 123 AB
Author	Rating: Not yet rated. Amos Hurd

Title	Test Details Current UK Vehicle Registration
Expression	^([A-HK-PRSVWY][A-HJ-PR-Y])\s?([0][2-9]|[1-9][0-9])\s?[A-HJ-PR-Z]{3}$
Description	UK vehicle registration system currently in use (as defined by the DVLA and put into effect from September 2001, and therefore does not allow registrations prior to this date).
Matches	AB51DVL | AB 51 DVL
Non-Matches	AZ01DLQ | AZ 01 DLQ
Author	Rating: Not yet rated. Amos Hurd

Title	Test Details Pattern Title
Expression	(È|É|Ê|Ë|è|é|ê|ë|E|e|È|É|Ê|Ë|È|É|Ê|Ë|è|é|ê|ë|è|é|ê|ë)
Description	Spam stopper, catches non english characters used in flocks.
Matches	Ëvery one | Ënlargëmênt | bêst ëver
Non-Matches	Every one | Enlargement | best ever
Author	Rating: Not yet rated. Alanski Perryman