将DOMDocument中的特定元素导出为字符串 [英] Export particular element in DOMDocument to string
问题描述
我使用 loadHTML（）函数将一些任意HTML导入到 DOMDocument 中，例如。：
$ html ='< p>< a href =test.php>测试< / a>< / p为H.';
$ doc = new DOMDocument;
$ doc-> loadHTML（$ html）;
然后我想使用 一旦我做出了这些改变，我想导出HTML字符串（使用<$ c $ < $ gt;> saveHTML（） DOMDocument 更改一些属性/ ）， ... <
DOMDocument 标签自动添加到HTML中。
我明白为什么要添加这些标签（以确保有效的文档），但是如何才能让我的编辑后的HTML（基本上在< body> 标签之间的所有内容）？
我已阅读此帖子，并提供了一些解决方案我宁愿这样做'正确'，即不要在< body> 标签中使用字符串替换。 HTML的有效性不是问题，因为它通过一个HTML净化器在手边运行。
任何想法？谢谢。
编辑
我知道 $ node 参数添加到PHP 5.3.6中的 saveHTML（）中，不幸的是我被困在5.2中。
也许源代码这将有所帮助 - 他们正在使用正则表达式去除不必要的字符串：
http://beerpla.net/projects/smartdomdocument-a-smarter-php -domdocument-class /
$ content = preg_replace（array（/ ^ \< \！ DOCTYPE。*？< html>< body> / si，
！< / body>< / html> $！si），
，
$这 - > saveHTML（）方法）;
返回$ content;
saveHTMLExact（） - DOMDocument的设计极其糟糕如果您加载的HTML代码不包含< html> 和< body> 标签，它会添加它们因此，当您调用$ doc-> saveHTML（）时，您新保存的内容现在具有
DOCTYPE 。 SmartDOMDocument包含一个名为saveHTMLExact（）的新函数，它完全符合您的需求 - 它可以保存HTML，而不会增加DOMDocument所做的额外垃圾。
另外，其他问题也有类似的问题：
如何保存没有HTML包装的DOMDocument的HTML？
I'm importing some arbitrary HTML into a DOMDocument using the loadHTML() function, eg.:
$html = '<p><a href="test.php">Test</a></p>';
$doc = new DOMDocument;
$doc->loadHTML($html);
I then want to change a few attributes/node values using DOMDocument methods which I can do no problem.
Once I've made these changes I'd like to export the HTML string (using ->saveHTML()), without the <html><body>... tags that the DOMDocument automatically adds to the HTML.
I understand why these are added (to ensure a valid document), but how would I go about just getting my edited HTML back (essentially everything between the <body> tags)?
I have read this post and while it offers some solutions I would rather do this 'properly', i.e. without using a string replace on the <body> tags. Validity of the HTML is not an issue as it's run through an HTML purifier before hand.
Any ideas? Thanks.
EDIT
I'm aware of the $node parameter added to saveHTML() in PHP 5.3.6, unfortunately I'm stuck with 5.2.
Perhaps the source code of this will help - They're using a regex to strip out the unnecessary strings:
http://beerpla.net/projects/smartdomdocument-a-smarter-php-domdocument-class/
$content = preg_replace(array("/^\<\!DOCTYPE.*?<html><body>/si",
"!</body></html>$!si"),
"",
$this->saveHTML());
return $content;
saveHTMLExact() - DOMDocument has an extremely badly designed "feature" where if the HTML code you are loading does not contain <html> and <body> tags, it adds them automatically (yup, there are no flags to turn this behavior off).
Thus, when you call $doc->saveHTML(), your newly saved content now has <html><body> and DOCTYPE in it. Not very handy when trying to work with code fragments (XML has a similar problem).
SmartDOMDocument contains a new function called saveHTMLExact() which does exactly what you would want – it saves HTML without adding that extra garbage that DOMDocument does.
Also, other questions have asked similar things:
How to saveHTML of DOMDocument without HTML wrapper?
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