boolean $sort - whether to sort the attributes alphabetically
boolean $multiline - whether to display the attributes on more than one line (makes it easier to read)
string $indent - indentation characters, only used when multiline is set to TRUE
string $linebreak - linebreak character, only used when multiline is set to TRUE
integer $entities - define, which entities should be replaced in the attribute values. One of
XML_UTIL_ENTITIES_NONE, XML_UTIL_ENTITIES_XML, XML_UTIL_ENTITIES_XML_REQUIRED or XML_UTIL_ENTITIES_HTML