note 107696 added to function.mb-convert-encoding

An addendum to my "to7bit" function referenced below in the notes. The function is supposed to solve the problem that some languages require a different 7bit rendering of special (umlauted) characters for sorting or other applications. For example, the German ß ligature is usually written "ss" in 7bit context. Dutch ÿ is typically rendered "ij" (not "y"). The original function works well with word (alphabet) character entities and I've seen it used in many places. But non-word entities cause funny results: E.g., "&copy;" is rendered as "c", "&shy;" as "s" and "&rquo;" as "r". The following version fixes this by converting non-alphanumeric characters (also chains thereof) to '_'. <?php /** * @args string $text line of encoded text * string $from_enc (encoding type of $text, e.g. UTF-8, ISO-8859-1) * * @returns 7bit representation */ function to7bit($text,$from_enc) { $text = preg_replace(/\W+/,'_',$text); $text = mb_convert_encoding($text,'HTML-ENTITIES',$from_enc); $text = preg_replace( array('/&szlig;/','/&(..)lig;/', '/&([aouAOU])uml;/','/&yuml;/','/&(.)[^;]*;/'), array('ss',"$1","$1".'e','ij',"$1"), $text); return $text; } ?> Enjoy again, Johannes ---- Server IP: 69.147.83.197 Probable Submitter: 87.172.158.224 ---- Manual Page -- http://www.php.net/manual/en/function.mb-convert-encoding.php Edit -- https://master.php.net/note/edit/107696 Del: integrated -- https://master.php.net/note/delete/107696/integrated Del: useless -- https://master.php.net/note/delete/107696/useless Del: bad code -- https://master.php.net/note/delete/107696/bad+code Del: spam -- https://master.php.net/note/delete/107696/spam Del: non-english -- https://master.php.net/note/delete/107696/non-english Del: in docs -- https://master.php.net/note/delete/107696/in+docs Del: other reasons-- https://master.php.net/note/delete/107696 Reject -- https://master.php.net/note/reject/107696 Search -- https://master.php.net/manage/user-notes.php