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Title	Test Details One Numeric Digit
Expression	^\d$
Description	Matches exactly 1 numeric digit (0-9).
Matches	1 | 2 | 3
Non-Matches	a | 324 | num
Author	Rating: Steven Smith

Title	Test Details Five Integer US ZIP Code
Expression	^\d{5}$
Description	Matches 5 numeric digits, such as a zip code.
Matches	33333 | 55555 | 23445
Non-Matches	abcd | 1324 | as;lkjdf
Author	Rating: Steven Smith

Title	Test Details ZIP+4 - XXXXX-XXXX
Expression	^\d{5}-\d{4}$
Description	Numeric and hyphen 5+4 ZIP code match for ZIP+4.
Matches	22222-3333 | 34545-2367 | 56334-2343
Non-Matches	123456789 | A3B 4C5 | 55335
Author	Rating: Steven Smith

Title	Test Details US ZIP (5 or 5+4)
Expression	^\d{5}$|^\d{5}-\d{4}$
Description	This regular expression will match either a 5 digit ZIP code or a ZIP+4 code formatted as 5 digits, a hyphen, and another 4 digits. Other than that, this is just a really really long description of a regular expression that I'm using to test how my front page will look in the case where very long expression descriptions are used.
Matches	55555-5555 | 34564-3342 | 90210
Non-Matches	434454444 | 645-32-2345 | abc
Author	Rating: Steven Smith

Title	Test Details Any One US ASCII Letter
Expression	^[a-zA-Z]$
Description	Matches any single upper- or lower-case letter.
Matches	a | B | c
Non-Matches	0 | & | AbC
Author	Rating: Steven Smith

Title	Test Details A string of any US ASCII letters
Expression	^[a-zA-Z]+$
Description	Matches any string of only upper- and lower- case letters (no spaces).
Matches	abc | ABC | aBcDeF
Non-Matches	abc123 | mr. | a word
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Alphanumeric
Expression	^[a-zA-Z0-9]+$
Description	Matches any alphanumeric string (no spaces).
Matches	10a | ABC | A3fg
Non-Matches	45.3 | this or that | $23
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Positive Integer
Expression	^\d+$
Description	Positive integer value.
Matches	123 | 10 | 54
Non-Matches	-54 | 54.234 | abc
Author	Rating: Steven Smith

Title	Test Details Signed Integer
Expression	^(\+|-)?\d+$
Description	Matches any signed integer.
Matches	-34 | 34 | +5
Non-Matches	abc | 3.1415 | -5.3
Author	Rating: Steven Smith

Title	Test Details Strongish Password
Expression	^[a-zA-Z]\w{3,14}$
Description	The password's first character must be a letter, it must contain at least 4 characters and no more than 15 characters and no characters other than letters, numbers and the underscore may be used
Matches	abcd | aBc45DSD_sdf | password
Non-Matches	afv | 1234 | reallylongpassword
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Email - Overly Simple
Expression	^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$
Description	Simple email expression. Doesn't allow numbers in the domain name and doesn't allow for top level domains that are less than 2 or more than 3 letters (which is fine until they allow more). Doesn't handle multiple "." in the domain ([email protected]).
Matches	[email protected] | [email protected] | [email protected]
Non-Matches	[email protected] | [email protected] | [email protected]
Author	Rating: Steven Smith

Title	Test Details Date With Slashes
Expression	^\d{1,2}\/\d{1,2}\/\d{4}$
Description	This regular expressions matches dates of the form XX/XX/YYYY where XX can be 1 or 2 digits long and YYYY is always 4 digits long.
Matches	4/1/2001 | 12/12/2001 | 55/5/3434
Non-Matches	1/1/01 | 12 Jan 01 | 1-1-2001
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	foo
Description	The "hello world" of regular expressions, this will match any string with an instance of 'foo' in it.
Matches	foo
Non-Matches	bar
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^[1-5]$
Description	This matches a single numeric digit between 1 and 5, and is the same as saying ^[12345]$.
Matches	1 | 3 | 4
Non-Matches	6 | 23 | a
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^[12345]$
Description	This matches a single numeric digit between 1 and 5, and is the same as saying ^[1-5]$.
Matches	1 | 2 | 4
Non-Matches	6 | -1 | abc
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$
Description	This expression matches email addresses, and checks that they are of the proper form. It checks to ensure the top level domain is between 2 and 4 characters long, but does not check the specific domain against a list (especially since there are so many of them now).
Matches	[email protected] | [email protected] | [email protected]
Non-Matches	a@b | notanemail | joe@@.
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^[2-9]\d{2}-\d{3}-\d{4}$
Description	This expression matches a hyphen separated US phone number, of the form ANN-NNN-NNNN, where A is between 2 and 9 and N is between 0 and 9.
Matches	800-555-5555 | 333-444-5555 | 212-666-1234
Non-Matches	000-000-0000 | 123-456-7890 | 2126661234
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^\d{5}-\d{4}|\d{5}|[A-Z]\d[A-Z] \d[A-Z]\d$
Description	This expression matches three different formats of postal codes: 5 digit US ZIP code, 5 digit US ZIP code + 4, and 6 digit alphanumeric Canadian Postal Code. The first one must be 5 numeric digits. The ZIP+4 must be 5 numeric digits, a hyphen, and then 4 numeric digits. The Canadian postal code must be of the form ANA NAN where A is any uppercase alphabetic character and N is a numeric digit from 0 to 9.
Matches	44240 | 44240-5555 | G3H 6A3
Non-Matches	Ohio | abc | g3h6a3
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}
Description	US Phone Number -- doesn't check to see if first digit is legal (not a 0 or 1).
Matches	(123) 456-7890 | 123-456-7890
Non-Matches	1234567890
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	[\w-]+@([\w-]+\.)+[\w-]+
Description	Yet another simple email validator expression.
Matches	[email protected] | [email protected]
Non-Matches	asdf | 1234
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	\d{4}-?\d{4}-?\d{4}-?\d{4}
Description	Major credit card validator. Only checks that the format is 16 digits (optionally separated by hyphens), not the value of any of the digits.
Matches	1234-1234-1234-1234 | 1234123412341234
Non-Matches	1234123412345
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^(?=.*\d).{4,8}$
Description	Password expression. Password must be between 4 and 8 digits long and include at least one numeric digit.
Matches	1234 | asdf1234 | asp123
Non-Matches	asdf | asdf12345 | password
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{4,8}$
Description	Password matching expression. Password must be at least 4 characters, no more than 8 characters, and must include at least one upper case letter, one lower case letter, and one numeric digit.
Matches	asD1 | asDF1234 | ASPgo123
Non-Matches	asdf | 1234 | ASDF12345
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	(\w+)\s+\1
Description	This expression uses a BackReference to find occurrences of the same word twice in a row (separated by a space). Matches things like 'mandate dated', which may not be desirable. See Sean Carley's update for a better expression for true repeated word matching.
Matches	hubba hubba | mandate dated | an annual
Non-Matches	may day | gogo | 1212
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^(\d{4}[- ]){3}\d{4}|\d{16}$
Description	Credit card validator. Just checks that the format is either 16 numbers in groups of four separated by a "-" or a " " or nothing at all.
Matches	1234-1234-1234-1234 | 1234 1234 1234 1234 | 1234123412341234
Non-Matches	Visa | 1234 | 123-1234-12345
Author	Rating: Not yet rated. Steven Smith

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	^.{4,8}$
Description	Matches any string between 4 and 8 characters in length. Limits the length of a string. Useful to add to password regular expressions.
Matches	asdf | 1234 | asdf1234
Non-Matches	asd | 123 | asdfe12345
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^\d*$
Description	Accepts an unsigned integer number. Also matches empty strings.
Matches	123 | 000 | 43
Non-Matches	asbc | -34 | 3.1415
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[-+]?\d*$
Description	Matches any integer number or numeric string, including positive and negative value characters (+ or -). Also matches empty strings.
Matches	123 | -123 | +123
Non-Matches	abc | 3.14159 | -3.14159
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^\d*\.?\d*$
Description	Matches any unsigned floating point number/numeric string. Also matches empty strings.
Matches	123 | 3.14159 | .234
Non-Matches	abc | -3.14159 | 3.4.2
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[-+]?\d*\.?\d*$
Description	Matches any floating point numer/numeric string, including optional sign character (+ or -). Also matches empty strings.
Matches	123 | +3.14159 | -3.14159
Non-Matches	abc | 3.4.5 | $99.95
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^\d{9}[\d|X]$
Description	A very simple ISBN validation expression - it just checks for a 10 digit number where the last digit could also be a capital 'X'. Complete specs for ISBN available here: http://www.isbn.org/standards/home/isbn/international/html/usm4.htm. An enhancement would be to allow exactly 3 or 0 hyphens or 3 or 0 spaces, since these are also valid formats.
Matches	1234123412 | 123412341X
Non-Matches	not an isbn
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^(20|21|22|23|[0-1]\d)[0-5]\d$
Description	This regular expression will match a 24 hour time with no separators.
Matches	1200 | 1645 | 2359
Non-Matches	2400 | asbc | 12:45
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^( [1-9]|[1-9]|0[1-9]|10|11|12)[0-5]\d$
Description	Matches a 12-hour time value expressed as either 4 numeric digits, 3 numeric digits, or a space and 3 numeric digits. 3 digit times (930) can be expressed with leading 0's (0930) or not. AM/PM designation is not included in this expression.
Matches	1145 | 933 | 801
Non-Matches	0000 | 1330 | 8:30
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^(|(0[1-9])|(1[0-2]))\/((0[1-9])|(1\d)|(2\d)|(3[0-1]))\/((\d{4}))$
Description	This expression matches dates formatted as MM/DD/YYYY where months and days must be 2 digits each, zero padded. It is not perfect - it allows DD to be from 01 to 31 regardless of the month.
Matches	01/01/2001 | 02/30/2001 | 12/31/2002
Non-Matches	1/1/02 | 1/1/2002 | 1/25/2002
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^((((0[13578])|(1[02]))[\/]?(([0-2][0-9])|(3[01])))|(((0[469])|(11))[\/]?(([0-2][0-9])|(30)))|(02[\/]?[0-2][0-9]))[\/]?\d{4}$
Description	Date expressions that matches MM/DD/YYYY where MM and DD must be two digits and zero padded. Validates correctly for all months except February, which it assumes to always have 29 days. The "/" separator is optional.
Matches	01/01/2001 | 02/29/2002 | 12/31/2002
Non-Matches	1/1/02 | 02/30/2002 | 1/25/2002
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^[-+]?\d+(\.\d+)?$
Description	This matches any real number, with optional decimal point and numbers after the decimal, and optional positive (+) or negative (-) designation.
Matches	123 | -123.45 | +123.56
Non-Matches	123x | .123 | -123.
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	[A-Z][a-z]+
Description	This expression was developed to match the Title cased words within a Camel cased variable name. So it will match 'First' and 'Name' within 'strFirstName'.
Matches	strFirstName | intAgeInYears | Where the Wild Things Are
Non-Matches	123 | abc | this has no caps in it
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	\.com/(\d+)$
Description	This is a regex I wrote to capture requests to AspAlliance.com with an article id as the only thing after the domain. So http://aspalliance.com/123 would go to article number 123. It maps the URL to the actual aspx file that displays the article based on the ID.
Matches	http://aspalliance.com/123 | www.aspalliance.com/123 | http://aspalliance.com/34
Non-Matches	http://aspalliance.com/article.aspx?id=123 | http://aspalliance.com/ | http://aspalliance.com/articl
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^DOMAIN\\\w+$
Description	In response to a question on the regex list at www.aspadvice.com, this expression should ensure that a login field's username includes a 'DOMAIN\' prefix. The latter part of the expression should probably be limited so that it only allows usernames of appropriate lengths, perhaps 3 to 20 characters (by replacing + with {3,20} for instance).
Matches	DOMAIN\ssmith | DOMAIN\a | DOMAIN\username
Non-Matches	ssmith | username | DOMAIN\
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Price
Expression	^[$]?[0-9]*(\.)?[0-9]?[0-9]?$
Description	Should match prices with or without a dollar sign.
Matches	4.42 | $4.42
Non-Matches	asdf
Author	Rating: Steven Smith

Title	Test Details Image File Extension
Expression	.*(\.[Jj][Pp][Gg]|\.[Gg][Ii][Ff]|\.[Jj][Pp][Ee][Gg]|\.[Pp][Nn][Gg])
Description	This expression should work to validate that an uploaded file's extension is either jpg, gif, or png.
Matches	foo.gif|foo.jpg|foo.png
Non-Matches	foo.txt|foo.zip|foo.exe
Author	Rating: Not yet rated. Steven Smith