PHP:DOM获取<；xxx/>；在<；李>；要素

如何检查“

li

”元素中是否有“

star

”元素，并获取star元素的计数

<random>
  <li>
      Blah blah <star item="1"/> blah <star item="2"/> Blah blah blah
  </li>
  <li>
      Blah blah Blah blah blah
  </li>
</random>

试试这个

        $dom = new DOMDocument;
    $dom->loadXML($ul);

    $liElements = $dom->getElementsByTagName('li');
    $liCount = $dom->getElementsByTagName('li')->length;
    // Select a random li
    $useThisItem = rand(0, $liCount-1);

    $liToProcess = $liElements->item($useThisItem)->nodeValue;
    // This echo will output 'Blah blah blah Blah blah blah' (if first li is selected)
    echo $liElements->item($useThisItem)->childNodes->length . "<br>";
    $noStars = 0;
        if($liElements->item($useThisItem)->childNodes->length > 1) {

           foreach($liElements->item($useThisItem)->childNodes as $cN) {
               if(isset($cN->tagName) && ($cN->tagName === "star") ){
                   // echo $cN->tagName . "<br/>"; 
                   $noStars++;
               }
           }   
        }        


    echo "li: " . $liToProcess . "<br/>\n";
    echo "No of Stars = $noStars <br/>\n";

$dom=新的DOMDocument；
$dom->loadXML（$ul）；
$liElements=$dom->getElementsByTagName（'li'）；
$liCount=$dom->getElementsByTagName（'li'）->长度；
//选择一个随机变量
$useThisItem=rand（0，$liCount-1）；
$liToProcess=$liElements->item（$useThisItem）->nodeValue；
//此回音将输出“诸如此类诸如此类”（如果选择了第一个li）
echo$liElements->item（$useThisItem）->childNodes->length。“
”；
$noStars=0；
如果（$liElements->item（$useThisItem）->childNodes->length>1）{
foreach（$liElements->item（$useThisItem）->childNodes作为$cN）{
如果（isset（$cN->标记名）&&（$cN->标记名==“星形”））{
//echo$cN->标记名“
”；
$noStars++；
}
}   
}        
回声“李：”$利托过程。“
\n”；
echo“星星数=$noStars
\n”；

        $dom = new DOMDocument;
    $dom->loadXML($ul);

    $liElements = $dom->getElementsByTagName('li');
    $liCount = $dom->getElementsByTagName('li')->length;
    // Select a random li
    $useThisItem = rand(0, $liCount-1);

    $liToProcess = $liElements->item($useThisItem)->nodeValue;
    // This echo will output 'Blah blah blah Blah blah blah' (if first li is selected)
    echo $liElements->item($useThisItem)->childNodes->length . "<br>";
    $noStars = 0;
        if($liElements->item($useThisItem)->childNodes->length > 1) {

           foreach($liElements->item($useThisItem)->childNodes as $cN) {
               if(isset($cN->tagName) && ($cN->tagName === "star") ){
                   // echo $cN->tagName . "<br/>"; 
                   $noStars++;
               }
           }   
        }        


    echo "li: " . $liToProcess . "<br/>\n";
    echo "No of Stars = $noStars <br/>\n";