A reference to the XML parser to use.
Chunk of data to parse. A document may be parsed
piece-wise by calling
xml_parse() several times with new data, as long as
the is_final
parameter is set and
TRUE when the last data is parsed.
If set and TRUE,
data is the last
piece of data sent in this parse.
When the XML document is parsed, the handlers for the
configured events are called as many times as necessary,
after which this function returns
TRUE or FALSE.
TRUE is returned if the
parse was successful, FALSE
if it was not successful, or if
parser does not refer to a valid parser. For
unsuccessful parses, error information can be retrieved with
xml_get_error_code(),
xml_error_string(), xml_get_current_line_number(), xml_get_current_column_number() and xml_get_current_byte_index().