如何防止将文档类型添加到HTML？ [英] How to prevent the doctype from being added to the HTML?
问题描述
我一直在使用DOM处理这个tidy-up-messy-html标记，但是现在我意识到了一个更大的问题，
I have been working on this tidy-up-messy-html tags with DOM, but now I realise a bigger problem,
$content = '<p><a href="#">this is a link</a></p>';
function tidy_html($content,$allowable_tags = null, $span_regex = null)
{
$dom = new DOMDocument();
$dom->loadHTML($content);
// other codes
return $dom->saveHTML();
}
echo tidy_html($content);
它将输出整个DOM，
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p><a href="#">this is a link</a></p></body></html>
但是我只想要这样的东西，
but I only want something like this in the return,
<p><a href="#">this is a link</a></p>
我不想要，
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body>...</body></html>
这可能吗？
编辑：
innerHTML 模拟会在我的数据库中生成一些奇怪的代码，例如&＃13; ， ，’ p>
the innerHTML simulation generates some strange codes in my database, like ,  , ’
<p>Monday July 5th 10am - 3.30pm £20</p>
<p>Be one of the first visitors to the ...at this special event.Â</p>
<p>All participants will receive a free copy of the ‘Contemporary Art Kit’ produced exclusively for Art on....</p>
innerHTML 模拟，
$innerHHTML = '';
$nodeBody = $dom->getElementsByTagName('body')->item(0);
foreach($nodeBody->childNodes as $child) {
$innerHTML .= $nodeBody->ownerDocument->saveXML($child);
}
我发现出现中断时会产生奇怪代码的原因是由于 saveXML（$ child）
I found out that the reason it creates the strange codes when there is a break is caused by saveXML($child)
所以当我有这样的内容时，
So when I have something like this,
$content = '<p><br/><a href="#">xx</a></p>
<p><br/><a href="#">xx</a></p>';
它将返回类似这样的内容，
It will return something like this,
<p><a href="#">xx</a></p>
<p><a href="#">xx</a></p>
但是我实际上想要这个东西，
But I want something this actually,
<p><a href="#">xx</a></p>
<p><a href="#">xx</a></p>
推荐答案
如果您正在处理片段，通常只需要正文内容。
If you're working on a fragment, you normally need only the body contents.
PHP中的DomDocument不提供 innerHTML 之类的东西。但是，您可以模拟它：
DomDocument in PHP does not offer something like innerHTML. You can simulate it however:
$innerHHTML = '';
$nodeBody = $dom->getElementsByTagName('body')->item(0);
foreach($nodeBody->childNodes as $child) {
$innerHTML .= $nodeBody->ownerDocument->saveXML($child);
}
如果您只想修复片段，则可以使用<还有href = http://php.net/manual/en/book.tidy.php rel = nofollow>整洁的库：
If you just want to repair a fragment, you can make use of the tidy library as well:
$html = tidy_repair_string($html, array('output-xhtml'=>1,'show-body-only'=>1));
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