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求教php生成xml前先怎?清空xml或?除根??data

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2016-06-23 14:16:141091browse

$dom = new DOMDocument('1.0', 'UTF-8');$dom->formatOutput = true;$filename = $this->appurl.$this->modeldir."/template/".$lang."/eval_tytakg.xml";$dom ->load($filename);//先?除$xpath = new domxpath($dom);$olddata = $xpath->query("/data")->item(0);if($olddata){	$olddata->parentNode->removeChild($olddata);	$dom->preserveWhiteSpace = false;	$dom->load($filename);	$dom->save($filename);}



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木有人回覆？我自己把帖子?起?

我的做法是如果文件存在，先UNLINK，然后再创建新文件写入需要的内容

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