# [EMAIL PROTECTED] / 2007-01-17 16:59:26 +0100: > Roman Neuhauser wrote: > > re_format(7) on FreeBSD: > > > > A bracket expression is a list of characters enclosed in `[]'. > > (...) > > If two characters in the list are separated by `-', this is > > shorthand for the full range of characters between those two > > (inclusive) in the collating sequence, e.g. `[0-9]' in ASCII > > matches any decimal digit. > > (...) > > Ranges are very collating-sequence-dependent, and portable programs > > should avoid relying on them. > > one other thing ... > > wouldn't it be fair to assume (safety through paranoia) that > ctype_alnum() would suffer the same problem? (given the manual's > indication that ctype_alnum() and the offending regexp are equivalent?)
isalnum(3) uses isalpha(3) and isdigit(3), so yes, their results are locale-dependent (LC_CTYPE, see setlocale(3)), but don't depend on collating sequence. isdigit(3): The isdigit() function tests for a decimal digit character. Regardless of locale, this includes the following characters only: ``0'' ``1'' ``2'' ``3'' ``4'' ``5'' ``6'' ``7'' ``8'' ``9'' -- How many Vietnam vets does it take to screw in a light bulb? You don't know, man. You don't KNOW. Cause you weren't THERE. http://bash.org/?255991 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php