将DOMDocument中的特定元素导出为字符串
I'm importing some arbitrary HTML into a DOMDocument
using the loadHTML()
function, eg.:
我正在使用loadHTML()函数将一些任意HTML导入DOMDocument,例如:
$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.
然后我想使用DOMDocument方法更改一些属性/节点值,我可以毫无问题。
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.
一旦我做了这些更改,我想导出HTML字符串(使用 - > saveHTML()),而不使用DOMDocument自动添加到HTML的 ...标记。
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)?
我理解为什么会添加这些(以确保有效的文档),但是我如何才能将我编辑的HTML(尤其是标签之间的所有内容)放回去?
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.
我已经阅读了这篇文章,虽然它提供了一些解决方案,但我宁愿这样做“正确”,即不使用标签上的字符串替换。 HTML的有效性不是问题,因为它预先通过HTML净化器运行。
Any ideas? Thanks.
有任何想法吗?谢谢。
EDIT
编辑
I'm aware of the $node
parameter added to saveHTML()
in PHP 5.3.6, unfortunately I'm stuck with 5.2.
我知道在PHP 5.3.6中为saveHTML()添加了$ node参数,不幸的是我坚持使用5.2。
3 个解决方案
#1
4
Perhaps the source code of this will help - They're using a regex to strip out the unnecessary strings:
也许这个源代码会有所帮助 - 他们使用正则表达式删除不必要的字符串:
http://beerpla.net/projects/smartdomdocument-a-smarter-php-domdocument-class/
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).
saveHTMLExact() - DOMDocument有一个设计极其糟糕的“功能”,如果你加载的HTML代码不包含和标签,它会自动添加它们(是的,没有标志可以关闭此行为) 。
Thus, when you call $doc->saveHTML(), your newly saved content now has <html><body>
and DOCTYPE
in it. Not very handy when trying to work with code fragments (XML has a similar problem).
因此,当您调用$ doc-> saveHTML()时,您新保存的内容现在包含 和DOCTYPE。在尝试使用代码片段时不是很方便(XML有类似的问题)。
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.
SmartDOMDocument包含一个名为saveHTMLExact()的新函数,它可以完全满足您的需要 - 它可以保存HTML而不会添加DOMDocument所做的额外垃圾。
Also, other questions have asked similar things:
此外,其他问题也提出了类似的问题:
How to saveHTML of DOMDocument without HTML wrapper?
如何在没有HTML包装的情况下保存DOMDocument的HTML?
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