php生成XML怎么加BOM

php生成XML如何加BOM
php生成XML如何加BOM
由于输出的xml用于给flash调用的，现在输出的XML不带BOM的，会出现乱码。请求怎么加bom上去：

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->        $dom = new DOMDocument("1.0","utf-8");         header("Content-Type: text/html; charset=unicode");        //items        $root = $dom->createElement("items");         $dom->appendChild($root);         //count        $count = $dom->createAttribute("count");         $root->appendChild($count);         $count_value = $dom->createTextNode("6");         $count->appendChild($count_value);                 //item        $item = $dom->createElement("item");         $root->appendChild($item);         $text = $dom->createTextNode($content);        $item->appendChild($text);         //id                $id = $dom->createAttribute("id");         $item->appendChild($id);         $idValue = $dom->createTextNode("156");         $id->appendChild($idValue);         //title        $title = $dom->createAttribute("title");         $item->appendChild($title);         $titleValue = $dom->createTextNode("test");         $title->appendChild($titleValue);         $content=$dom->saveXML();

------解决方案--------------------
$bom = pack("C3",239,187,191);

帮楼主搜索了哈
看看这里http://blog.csdn.net/cheng830306/article/details/6043303