Deprecate StringUtil::convertEncoding()

This method is a simple wrapper around `mb_convert_encoding()`, so that one can
simply be called directly.

diff --git a/wcfsetup/install/files/lib/util/StringUtil.class.php b/wcfsetup/install/files/lib/util/StringUtil.class.php
index a65fdff17466055293f6e7dcfde76024f2de055f..d3fb521faf126de6e236cd4d93ff5c412d9def2b 100644 (file)
--- a/wcfsetup/install/files/lib/util/StringUtil.class.php
+++ b/wcfsetup/install/files/lib/util/StringUtil.class.php
@@ -525,13 +525,7 @@ final class StringUtil
     }
 
     /**
-     * Converts a string to requested character encoding.
-     * @param string $inCharset
-     * @param string $outCharset
-     * @param string $string
-     * @return  string      converted string
-     * @see     mb_convert_encoding()
-     *
+     * @deprecated 5.6 Use `\mb_convert_encoding()` directly.
      */
     public static function convertEncoding($inCharset, $outCharset, $string)
     {