使用PHP XPath采集的时候，如何保留nodeValue里的html符号

程序员文章站 2024-02-04 10:06:34

...

代码如下：

$html = 



Test

  
    
      abcdefghijklmn
opqrstuvwxyz
    
  




EOF;
// create document object model
$dom = new DOMDocument();
// load html into document object model
@$dom->loadHTML($html);
// create domxpath instance
$xPath = new DOMXPath($dom);
// get all elements with a particular id and then loop through and print the href attribute
$elements = $xPath->query('//*[@id="content"]/p/span');
$content = $elements->item(0)->nodeValue;
echo $content;

内容里的会被去除，使用什么操作比如有没有$e->innerHtml之类的，可以保留html标签。

8.18 更新：

$html = 



Test

  
    
      abcdefghijklmn
opqrstuvwxyz
    
  




EOF;

// create document object model
$dom = new DOMDocument();
// load html into document object model
@$dom->loadHTML($html);
// create domxpath instance
$xPath = new DOMXPath($dom);
// get all elements with a particular id and then loop through and print the href attribute
$elements = $xPath->query('//*[@id="content"]/p/span');
$nodeName = $elements->item(0)->nodeName;
// $content = $elements->item(0)->nodeValue;
$content = $dom->saveXml($elements->item(0));
$content = $dom->saveHtml($elements->item(0));
$content = preg_replace(array("#^#isU", "#{$nodeName}>$#isU"), array('', ''), $content);
echo $content;

回复内容：

代码如下：

$html = 



Test

  
    
      abcdefghijklmn
opqrstuvwxyz
    
  




EOF;
// create document object model
$dom = new DOMDocument();
// load html into document object model
@$dom->loadHTML($html);
// create domxpath instance
$xPath = new DOMXPath($dom);
// get all elements with a particular id and then loop through and print the href attribute
$elements = $xPath->query('//*[@id="content"]/p/span');
$content = $elements->item(0)->nodeValue;
echo $content;

内容里的会被去除，使用什么操作比如有没有$e->innerHtml之类的，可以保留html标签。

8.18 更新：

$html = 



Test

  
    
      abcdefghijklmn
opqrstuvwxyz
    
  




EOF;

// create document object model
$dom = new DOMDocument();
// load html into document object model
@$dom->loadHTML($html);
// create domxpath instance
$xPath = new DOMXPath($dom);
// get all elements with a particular id and then loop through and print the href attribute
$elements = $xPath->query('//*[@id="content"]/p/span');
$nodeName = $elements->item(0)->nodeName;
// $content = $elements->item(0)->nodeValue;
$content = $dom->saveXml($elements->item(0));
$content = $dom->saveHtml($elements->item(0));
$content = preg_replace(array("#^#isU", "#{$nodeName}>$#isU"), array('', ''), $content);
echo $content;

自己找到了办法。。。

$content = $elements->item(0)->nodeValue;

// >> 改成 >>

$content = $dom->saveXml($elements->item(0));