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Any Expression Upper/Lower Case, with commas and space between the text, with any amount of space before or after

UK National Insurance (NI) Number, updated 14 Dec 2005 and current for 2006.

Finds sentences (assuming they end with a full stop, question mark or exclamation mark).

UK National Insurance Number (NINo) validation. The following modifications have been made: The first letter may not be D, F, I, Q, U or Z; the second letter may not be D, F, I, O, Q, U or Z; the final letter is optional.

Validate against any diner's club card. All diner club cards start with 30,36, or 38, followed by 12 other numbers.

Matchs comma delimited numbers. Easily changed to allow for other delimiters. (Edit ",") Does not allow a leading 0 Does not allow groups of numbers with less than 3 numbers, exculding the first group.

Spam stopper, catches any non english characters for u used in flocks

UK vehicle registration system prior to September 2001. Allows both older suffix and the later prefix formats in simple form, with optional spaces.

This regex validates U.S. social security numbers, within the range of numbers that have been currently allocated.

matches any string with characters repeated more than twice, sometimes used as fake input

Additional checks for <> and " characters

Validate against any discover card number. All DC's start with 6011 and are followed by 12 other numbers.

Matches any single upper- or lower-case letter.

Hex number/string validation method for the Electronic Serial Number(ESN) used in Cellular Phone products.

This Blacklist RegEx is designed to search a user input for any malicious code or SQL injection attempts.

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

Heres my sql clause parser regexp for recordset filtering. Does recursive query parsing all by its self. Only problem I cant figure is how to match comma separated lists of quoted strings. Tell me if you figure out how! The unicodes in the re was put in by the entry form please replace them with their ascii equivalents to use it.

Incorporated other people's examples; removed extraneous parenthesis on 10/7/04. Currently the SSA site says 772 is the highest AREA number generated (http://www.ssa.gov/employer/highgroup.txt). Old expression was: (^|\s)\d{3}(-?|[\. ])\d{2}\2\d{4}($|\s|[;:,!\.\?]). Looks for either the beginning of a line or whitespace before the beginning of the social security number, then either zero or one hyphen OR one of a period or space, then uses the \3 to reference the value returned in the parenthesis that includes the -?|[\. ] (basically says if the first dash, period, or space is there, then the second one is required; and if the first dash, period, or space is not there, then the second one can't be either), and finally looks for the end of a line, whitespace, or punctuation characters after the social security number.

Matches quoted string, using \" as an escape to place quotes in the string

Matches up to three alphabet words separated by spaces with first alphabet character of each word uppercase. Also matches empty strings.