What about PHP before generating XML? Empty XML or? root?? Data

$dom = new DOMDocument (' 1.0 ', ' UTF-8 '); $dom->formatoutput = true; $filename = $this->appurl. $this->modeldir. " /template/". $lang." /eval_tytakg.xml "; $dom->load ($filename);//First, except $xpath = new Domxpath ($dom); $olddata = $xpath->query ("/data ")- >item (0), if ($olddata) {$olddata->parentnode->removechild ($olddata), $dom->preservewhitespace = false;$ Dom->load ($filename); $dom->save ($filename);}

Reply to discussion (solution)

Is there any answer to the wood? I put the post on my own?

My practice is if the file exists, unlink it first, and then create a new file to write the required content

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