Fri, 10 Apr 2026 20:05:43 +0000 https://bugs.horde.org/ticket/7305 broken php htmlspecialchars workaround needed php htmlspecialchars function is stupid: When presented with invalid character data (e.g. raw latin1 'ä') and encoding is set to utf-8 (also possibly other multibyte encodings), htmlspecialchars returns empty string (http://bugs.php.net/bug.php?id=43896). horde should compensate for this, as not showing anything in an email when it contains broken utf-8 data is just plain wrong. So, before using htmlspecialchars with charset utf-8, data should be checked that it is (at least) valid utf-8. Not sure if this is horde or imp bug. In our local installation I fixed the problem with attached patch to lib/Horde/Text/Filter/text2html.php. We get a lot of messages with broken utf-8, unfortunately. Mon, 08 Sep 2008 14:56:36 +0000 https://bugs.horde.org/ticket/7305#t48773 This is a bug in PHP. Period. This is going to break tons of sites with user submitted content. Mon, 08 Sep 2008 15:27:48 +0000 https://bugs.horde.org/ticket/7305#t48774 Please reconsider. If I understand correctly, according to comment "[18 Jul 12:10am UTC] moriyoshi at php.net" php developers does not consider this to be a php bug or even consider fixing this in php. So, the application calling htmlspecialchars need to check that input is valid utf-8 (when using utf-8 charset argument). Wed, 10 Sep 2008 09:58:49 +0000 https://bugs.horde.org/ticket/7305#t48829