<?php
$xmlstr = <<<XMLEND
<?xml version="1.0" encoding="utf-8"?>
<data>
<target>
"<x id="c400c8394f0a" pid="NLCaption" name="NLCaption" />Caption"
</target>
<target />
<target><x id="a1e6b03cb682" pid="NLSheets" name="NLSheets" />Sheets"</target>
</data>
XMLEND;
$data = new SimpleXMLElement($xmlstr);
echo $data->target[0] . PHP_EOL;
echo $data->target[0]->x['id'];