On 1/25/06 11:20 AM, "Martin Baxter" <[EMAIL PROTECTED]> wrote:
> function isvalid mystring > return not (matchtext(mystring,"[^a-zA-Z0-9_]+?")) > end isvalid > > # there is a match if any character other than a-z A-Z 0-9 or _ is found > # in mystring > # using not inverts the result so that the function returns true > # if the string is valid. Looks good, Martin, but if the original intention is "isValid", not "isNotValid", I'd personally remove the "double-negatives": function isvalid mystring return (matchtext(mystring,"^[a-zA-Z0-9_]+$")) end isvalid The other possibility, if you want to depend on what PCRE's character matching table says, is to use the "any 'word' character" option \w: function isvalid mystring return (matchtext(mystring,"^\w+$")) end isvalid The docs (at http://www.pcre.org/man.txt) says this about \w: A "word" character is any letter or digit or the underscore character, that is, any character which can be part of a Perl "word". The definition of letters and digits is controlled by PCRE's character tables, and may vary if local-specific matching is taking place. For exaemple, in the "fr" (French) locale, some character codes greater than 128 are used for accented characters and there are matched by \w. Anyway, my 2 cents... Ken Ray Sons of Thunder Software Web site: http://www.sonsothunder.com/ Email: [EMAIL PROTECTED] _______________________________________________ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution