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This RegEx requires a US phone number WITH area code. It is written to all users to enter whatever delimiters they want or no delimiters at all (i.e. 111-222-3333, or 111.222.3333, or (111) 222-3333, or 1112223333, etc...).

Matches any string between 4 and 8 characters in length. Limits the length of a string. Useful to add to password regular expressions.

This checks for the specific syntax ((A,((b,c,d),(e,f,g))), ..). No limit on number of occurances.

Searches for tags and there atributes according to the HTML 2.0 specification to limit length of tags to 72 characters, and length of attribute values to 1024 characters.

I wrote this sweet little (well, not so little really) reg to extract links from an HTML source.... it is very robust, give it a try. The only limitation I have discovered is that it can't match invalid HTML...

Validates US phone numbers. Phone number can be delimited with dashes or spaces. Area code can optionally include parentheses. To optionally validate area codes, try this expression. ^([\(]{1}[0-9]{3}[\)]{1}[ |\-]{0,1}|^[0-9]{3}[\-| ])?[0-9]{3}(\-| ){1}[0-9]{4}$

Limit Length - limit the length of a text box or other area to contain any character plus new line

Matches C style strings allowing for escaped string delimiters to be included in the match. ALTERED 13-Dec-2003 ------------------- Previous pattern was : "([^"](?:\\.|[^\\"]*)*)" Changed to: "([^"]*(?:\\.|[^\\"]*)*)" Making the first character after the opening quote optional allows the pattern to match on empty quotes: "".

Matches ANSI SQL date format YYYY-mm-dd hh:mi:ss am/pm. You can use / - or space for date delimiters, so 2004-12-31 works just as well as 2004/12/31. Checks leap year from 1901 to 2099.

California Resale License number validator. Validates Letters and Numbers or Number only. Letters: First 2 letters can be SR, SS, ST , SX, SY, SZ (TAT Code) Next optional letter can be S,X,Y,Z. Next letters must be a minimum of two and a maximum of 3 (District Code). Numbers: Can be 8-9 numbers. Numbers can be delimited with a hypen or spaces after the first 2 numbers. Note: I use () to extract the information I want for use in other scripts.

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).

Peseudo-HTML code matcher. Allows for one parameter within the first tag (name is optional), the value of which can be optionally delimited by either double or single quotes. Uses backreferencing to ensure that the end and start tags match, and that any single or double quotes match. Very useful for web forums or any situation where users may be prompted to enter text for display on a webpage somewhere, as it can be quickly processed into HTML without allowing HTML to be specified within the input itself (which may pose a security risk).

Example of a regular expression that can be used to parse a comma delimited string into constituent, named sub-strings. Add or remove regex subfield definitions (?<field1>[^,]+) and corresponding delimiting characters in the regular expression as necessary to accommodate the string and subfields you intend to parse. Optionally, rename the subfield names in the regular expression to more meaningful names if you are using the parsed sub-strings in a program. Replace all occurrences of the comma in the regular expression with any required alternative delimiting character. As long as the delimiting character used does not occur naturally in any of the sub-strings, you should be good-to-go. NOTE: To change the delimiter character you must replace all occurrences of the comma in the current regex (of which there are 5) with the new delimiter character. e.g. (?<field1>[^;]+); changes the delimiter character to a semi-colon for the first field.

This expression will return the src (source) property of an image tag <IMG>. The source returned is limited to the file extensions supplied. It doesn't matter if the image is prefixed with '../' or 'http://..blah' or 'drive\path' or nothing. This expression could be modifed to return other sources or for the tags (ie <BGSOUND>, <SCRIPT>, etc.) depending on the file extensions given. I needed this to replace the source of images in a HTML page when I wanted to save the page to a local drive and keep the images intact. If anybody could modify this further to include only the <IMG> tag, I would appreciate the effort.

Regular expression for validating a US currency string field. Matches an unlimited number of digits to the left of an optional decimal point. Digits to the left of the decimal point can optionally be formatted with commas, in standard US currency format. If the decimal point is present, it must be followed by exactly two digits to the right. Matches an optional preceding dollar sign. Uses regex lookahead to preclude leading zeros and to match the optional formatting comma.

Validate a comma delimited string of integer between 1 and 99999999 (change {0,7} to whatever you need). No zero leading.

US Phone Number: This regular expression for US phone numbers conforms to NANP A-digit and D-digit requirments (ANN-DNN-NNNN). Area Codes 001-199 are not permitted; Central Office Codes 001-199 are not permitted. Format validation accepts 10-digits without delimiters, optional parens on area code, and optional spaces or dashes between area code, central office code and station code. Acceptable formats include 2225551212, 222 555 1212, 222-555-1212, (222) 555 1212, (222) 555-1212, etc. You can add/remove formatting options to meet your needs.

This regex can be used to split the values of a comma delimitted list. List elements may be quoted, unquoted or empty. Commas inside a pair of quotation marks are not matched.

This pattern matches a simple Decimal Literal. Leading digits limited to 8 and does not support commification.

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.