PHP DOMDocument::loadHTML() input error

Warning: DOMDocument::loadHTML(): input conversion failed due to input error, bytes 0xAD 0xE6 0x88 0x8F in C:\Userstest.img.dom.php on line 7

错误解决方案 :

$html=new DOMDocument();   

  $html_source    = get_html();
  $html_source    =mb_convert_encoding( $html_source, "HTML-ENTITIES", "UTF-8");
   $html->loadHTML( $html_source );