$result = array();
$arr    = array();

$res3 = new Literal("TITLE 1");
$res4 = new Literal("10");
$res4->setDatatype("http://www.w3.org/2001/XMLSchema#integer");


$arr["?title"]=$res3;
$arr["?price"]=$res4;

$result["rowcount"]=2;
$result["hits"]=1;
$result["part"][]=$arr;