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分享$strXML = <<<TEST
<html>
<table id="2">
<head>中国</head>
</table>
<table id="3">
<head>其它小国</head>
</table>
</html>
TEST;
$dom = new DOMDocument();
$dom->loadXML($strXML);
$xpath = new DOMXPath($dom);
$emps = $xpath->query("/html/table[@id=2]/head");
$emps->item(0)->nodeValue = "222";
echo $dom->saveXML();$xmldata=simplexml_load_string($strXML);
$dup = $xmldata->xpath("/html/table[@id='2']");
$dup[0]->head = 'link2';
$xml = $xmldata->asXML();
echo $xml;$dom = new DOMDocument();
$dom->load('t3.xml');
$xpath = new DOMXPath($dom);
$emps = $xpath->query("//table[@shuyu_id=52]/onetableshuliang");
$emps->item(0)->nodeValue = "444";
$dom->save('t3.xml');
$emps = $xpath->query("//table[@shuyu_id=52]/onetableshuliang");
$dom->load('xxx.xml');
...
$dom->save('xxx.xml');