(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
UConverter::transcode — Convert string from one charset to another
$str
   , string $toEncoding
   , string $fromEncoding
   [, array $options
  ] ) : string
This function is currently not documented; only its argument list is available.
str
toEncoding
fromEncoding
options