Description:
------------
When parsing an xml file with UTF-8 encoding (like this one: http://bit.ly/3PSi44), text containing German umlauts is cut off:

original:
<e:organization-name>Kaiser Wilhelm Institut f?r Z?chtungsforschung</e:organization-name>

result after parsing:
"Kaiser Wilhelm Institut f"

or parsing this
<dc:publisher>Societ?ts-Verlag</dc:publisher>

results in "?ts-Verlag"


Reproduce code:
---------------
$snippet = file_get_contents("http://bit.ly/3PSi44");

if (!($xml_parser = xml_parser_create("")))	
				die("Couldn't create parser.");
						xml_parser_set_option($xml_parser, XML_OPTION_TARGET_ENCODING,'UTF-8');  
						xml_set_element_handler($xml_parser,"startElementHandler","endElementHandler");
						xml_set_character_data_handler( $xml_parser, "characterDataHandler");

						$retstr = "";
						if(!xml_parse($xml_parser, $snippet)) 
							{
							$retstr = sprintf("XML error: %s at line %d",
												xml_error_string(xml_get_error_code($xml_parser)),
												xml_get_current_line_number($xml_parser));
							}
						xml_parser_free($xml_parser);




Expected result:
----------------
I expect properly imported text like outlined in the description:

parsing this:
<e:organization-name>Kaiser Wilhelm Institut f?r Z?chtungsforschung</e:organization-name>

should result in:
"Kaiser Wilhelm Institut f?r Z?chtungsforschung"

or parsing this
<dc:publisher>Societ?ts-Verlag</dc:publisher>

should result in "Societ?ts-Verlag"

Actual result:
--------------
I get cut-off pieces of text when the text contains German umlauts (see two examples in the description).

parsing this:
<e:organization-name>Kaiser Wilhelm Institut f?r Z?chtungsforschung</e:organization-name>

results in:
"Kaiser Wilhelm Institut f"

or parsing this
<dc:publisher>Societ?ts-Verlag</dc:publisher>

results in "?ts-Verlag"