/**
* Converts a string from one charset to another.
*
- * Works only if either the iconv or the mbstring extension
- * are present and best if both are available.
+ * Uses the iconv or the mbstring extensions.
* The original string is returned if conversion failed or none
* of the extensions were available.
*
- * @param mixed $input The data to be converted. If $input is an an array,
- * the array's values get converted recursively.
- * @param string $from The string's current charset.
- * @param string $to The charset to convert the string to.
+ * @param mixed $input The data to be converted. If $input is an an
+ * array, the array's values get converted
+ * recursively.
+ * @param string $from The string's current charset.
+ * @param string $to The charset to convert the string to.
+ * @param boolean $force Force conversion?
*
* @return mixed The converted input data.
*/