dongshuo8756 2017-04-27 11:44
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我只想在XPath中仅检索body元素的文本时仅排除JavaScript标记内容

I want to exclude only the JavaScript tag contents when retrieving only the text of the body element in XPath

▼index.html

<body>

  I want to acquire only "text excluding HTML tag" included in this part.

  <script language="JavaScript" type="text/javascript">
      var foo = 42;
  </script>

</body>

I have created the following code with DomCrawler. But, because it contains JavaScript tag contents, I could not get the intended results..

<?php

$crawler->filterXPath('//body')->each(function (DomCrawler $node) use ($url) {
    $result = trim($node->text());
});
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  • dongpengyu1363 2017-04-27 11:54
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    I would like to suggest you use DomXpath in which you can filter the content. by query. I am not pretty sure about Domcrawler.

    <?php
// to retrieve selected html data, try these DomXPath examples:

$file = $DOCUMENT_ROOT. "test.html";
$doc = new DOMDocument();
$doc->loadHTMLFile($file);

$xpath = new DOMXpath($doc);

// example 1: for everything with an id
//$elements = $xpath->query("//*[@id]");

// example 2: for node data in a selected id
//$elements = $xpath->query("/html/body/script");

// example 3: same as above with wildcard
$elements = $xpath->query("*/script");

if (!is_null($elements)) {
  foreach ($elements as $element) {
    echo "<br/>[". $element->nodeName. "]";

    $nodes = $element->childNodes;
    foreach ($nodes as $node) {
      echo $node->nodeValue. "
";
    }
  }
}
?>
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