php – Goutte – dom crawler – 删除节点

我的网站上有html(http://testsite.com/test.php)：

<div class="first">
  <div class="second">
     <a href="/test.php">click</a>
     <span>back</span>
  </div>
</div>
<div class="first">
  <div class="second">
     <a href="/test.php">click</a>
     <span>back</span>
  </div>
</div>

我想收到：

<div class="first">
  <div class="second">
     <a href="/test.php">click</a>
  </div>
</div>
<div class="first">
  <div class="second">
     <a href="/test.php">click</a>
  </div>
</div>

所以我想删除跨度.
我在Symfony2中使用Goutte基于http://symfony.com/doc/current/components/dom_crawler.html：

    $client = new Client();
    $crawler = $client->request('GET', 'http://testsite.com/test.php');

    $crawler->filter('.first .second')->each(function ($node) {
        //??????
    });

解决方法:

如explained in the docs：

The DomCrawler component eases DOM navigation for HTML and XML documents.

并且：

While possible, the DomCrawler component is not designed for manipulation of the DOM or re-dumping HTML/XML.

DomCrawler旨在从DOM文档中提取细节而不是修改它们.

然而…

由于PHP通过引用传递对象,而Crawler基本上是DOMNodes的包装器,因此在技术上可以修改底层DOM文档：

// will remove all span nodes inside .second nodes
$crawler->filter('html .content h2')->each(function (Crawler $crawler) {
    foreach ($crawler as $node) {
        $node->parentNode->removeChild($node);
    }
});

这是一个有效的例子：https://gist.github.com/jakzal/8dd52d3df9a49c1e5922

标签：php,dom,web-crawler,symfony,goutte
来源： https://codeday.me/bug/20190628/1319962.html