Chech for mb_convert_encoding first because mbstring is optional for RoundCube + add some phpdoc

1 files changed, 2 insertions, 1 deletions

diff --git a/program/lib/washtml.php b/program/lib/washtml.php
index f45fd458a..ad5f930dc 100644
--- a/program/lib/washtml.php
+++ b/program/lib/washtml.php
@@ -187,7 +187,8 @@ class washtml
     //Charset seems to be ignored (probably if defined in the HTML document)
     $node = new DOMDocument('1.0', $config['charset']);
     $full = true;
-    $html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8');
+    if (function_exists('mb_convert_encoding'))
+      $html = mb_convert_encoding($html, 'HTML-ENTITIES', $config['charset']);
     @$node->loadHTML($html);
     return self::dumpHtml($node, $config, $full);
   }