note 129704 added to function.preg-match

Worth to note that you might experience different results in regex functions when your string includes literal tab characters or the tab character notation. As you know, tab character matches with \s since it's a whitespace. But what if we use a numeric quantifier? Like \s{2,} This should match two or more subsequent whitespace characters, including two tabs (or one tab and one space), but not one tab only. But you might experience at some places your literal tab character matching with this quantifier. This is because some editors silently convert tab characters to 2 or 4 spaces according to your auto-indentation settings. This makes it eligible for \s{2,} since it's not a tab character anymore. But if you have the tab character notation (\t) instead of the literal tab string, this will never happen and thus it won't match this regex. ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.137 (proxied: 46.1.2.249) ---- Manual Page -- https://php.net/manual/en/function.preg-match.php Edit -- https://main.php.net/note/edit/129704 Del: integrated -- https://main.php.net/note/delete/129704/integrated Del: useless -- https://main.php.net/note/delete/129704/useless Del: bad code -- https://main.php.net/note/delete/129704/bad+code Del: spam -- https://main.php.net/note/delete/129704/spam Del: non-english -- https://main.php.net/note/delete/129704/non-english Del: in docs -- https://main.php.net/note/delete/129704/in+docs Del: other reasons-- https://main.php.net/note/delete/129704 Reject -- https://main.php.net/note/reject/129704 Search -- https://main.php.net/manage/user-notes.php