代码如下:
$html = <<<EOF
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Test</title>
</head>
<body>
<p id="content">
<p>
<span>
abcdefghijklmn<br />opqrstuvwxyz
</span>
</p>
</p>
</body>
</html>
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 $content;
内容里的<br />
会被去除,使用什么操作比如有没有$e->innerHtml之类的,可以保留html标签。
8.18 更新:
$html = <<<EOF
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Test</title>
</head>
<body>
<p id="content">
<p>
<span class='aaa'>
abcdefghijklmn<br /><span>opq</span>rstuvwxyz
</span>
</p>
</p>
</body>
</html>
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));
$content = preg_replace(array("#^<{$nodeName}.*>#isU", "#</{$nodeName}>$#isU"), array('', ''), $content);
echo $content;
怪我咯2017-04-10 15:57:50
自己找到了办法。。。
$content = $elements->item(0)->nodeValue;
// >> 改成 >>
$content = $dom->saveXml($elements->item(0));