PHP XMLReader PCDATA无效Char

I'm parsing an feed which comes in from the web and get the following error code:

XMLReader::read(): http://myfeedurl:22180: parser error : PCDATA invalid Char value 16

Any suggestions on how to fix this? Do I need to declare anything?

have you ever tried simplexml? http://php.net/simplexml

PCDATA: Parsed Character DATA

CDATA: Character DATA