Bug #11461 Updated: \. after \- does not work

ID: 11461 Updated by: postings.php.net@hans-spath.de Reported By: aweber@multamedio.de Status: Bogus Bug Type: Regexps related Operating System: Linux 2.2.16-SMP PHP Version: 4.0.6RC3 New Comment: @rasmus: It sounds like you've mistaken "^" for "[^" ... http://sunsite.utk.edu/gnu/regex/regex_17.html#SEC17 http://sunsite.utk.edu/gnu/regex/regex_23.html#SEC23 Previous Comments: ------------------------------------------------------------------------ [2002-05-14 12:31:25] rasmus@php.net A bracket expression is a list of characters enclosed in `[]'. It normally matches any single character from the list (but see below). If the list begins with `^', it matches any single character (but see below) not from the rest of the list. If two characters in the list are sepa­ rated 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. It is illegal- for two ranges to share an endpoint, e.g. `a-c-e'. Ranges are very collating-sequence-dependent, and portable programs should avoid relying on them. To include a literal `]' in the list, make it the first character (following a possible `^'). To include a lit­ eral `-', make it the first or last character, or the sec­ ond endpoint of a range. To use a literal `-' as the first endpoint of a range, enclose it in [.' and .]' to make it a collating element (see below). With the excep­ tion of these and some combinations using `[' (see next paragraphs), all other special characters, including `\', lose their special significance within a bracket expres­ sion. ------------------------------------------------------------------------ [2001-06-13 05:25:01] aweber@multamedio.de I tried to check email with $check = ereg('^[0-9A-Za-z_\-\.]+@[0-9A-Za-z_\-]+\.[0-9A-Za-z_\-\.]+[0-9A-Za-z_\-]+$',$email); This does not work with 'xxx-yyy@zzz.com', for example, althoug the regular expression is correct. It works this way in any other programming language. But if you write it in the following way it also works fine in PHP: $check = ereg('^[\.0-9A-Za-z_\-]+@[0-9A-Za-z_\-]+\.[\.0-9A-Za-z_\-]+[0-9A-Za-z_\-]+$',$email); Maybe the parser thinks of "-" as the range separator, althoug it is written as \- ? ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=11461&edit=1