履带式Symfony在元素后插入

Question

我与symfony合作 我想在示例的特定“ id”之后添加我拥有的任何元素

我有这个html

<ul>
<li id="li-0">
<a href="#"><span>All Products</span></a>
</li>
<li id="li-2" class="">
<a href="#"><span>Features</span>/a>
</li>

我想添加<li id="li-1" ><a href="#"><span>Testimonials</span></a></li>

具有id li-0的元素之后

`

    $crawler = new Crawler();
$htmlContent='<ul>
    <li id="li-0">
    <a href="#"><span>All Products</span></a>
    </li>
    <li id="li-3" class="">
    <a href="#"><span>Features</span>/a>
    </li>

</ul>';
$crawler->addHtmlContent($htmlContent, 'UTF-8');


$newNode = new Crawler();
$newNode->addHtmlContent('<li id="li-2" ><a href="#"><span>Testimonials</span></a></li>', 'UTF-8');


$node=$crawler->children()->filter('#li-0')->getNode(0);
$node->parentNode->insertBefore($newNode->children()->getNode(0));