error :"string does not uniquely describe"...

[narmataru <nar...@ho...>]

hello,
when i use an XPath object into another php class, it always print the =
error : "The supplied string does not uniquely describe a node in the =
xml document: " even if i'm sure that my request must give only one node =
since i use an id into my xml tags.=20
there is the with the getAttributes(), getData and with the =
getDataParts() function too !
it looks strange, no ?=20

thank tou for your answer.

from :: nar...@ho...

/***************************************************************** that =
works good
require_once("XPath.class.php");

$xpath =3D new XPath();

$xpath->importFromFile("error.xml");
$xreq =3D "file://error[@id=3D'-100']";
$attribute =3D $xpath->match($xreq);


print_r($attribute."<hr>");

print("value : ".$attribute[0]."<br>");
print("attrib : ".$attribute["type"]."<br>");
/*****************************************************************


/***************************************************************** it =
doesn't work !
class toto{

...

  function nextError(){

      // get datas into the xml file
      file://$xreq =3D "file://error[@id=3D'-100']";

      $attribute =3D $this->_xPathObj->getAttributes($xreq);
      $value =3D $this->_xPathObj->getData($xreq);

  }

...
}

the error dispayed is :
XPath error in XPath.class.php:868 The supplied string does not uniquely =
describe a node in the xml document: //error[@id=3D'-100']
XPath error in XPath.class.php:1117 The //error[@id=3D'-100'] does not =
evaluate to a single node in this document.