How to prevent the doctype from being added to the HTML?

Question

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);

It will output the entire 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>

but I only want something like this in the return,

<p><a href="#">this is a link</a></p>

I don't want,

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 
    <html><body>...</body></html>

Is this possible??

EDIT:

the innerHTML simulation generates some strange codes in my database, like  , Â , â€™

<p>Monday July 5th 10am - 3.30pm Â£20</p>&#13;
<p>Be one of the first visitors to the ...at this special event.Â</p>&#13;
<p>All participants will receive a free copy of the â€˜Contemporary Art Kitâ€™ produced exclusively for Art on....</p>&#13;

the innerHTML simulation,

$innerHHTML = '';
$nodeBody = $dom->getElementsByTagName('body')->item(0);
foreach($nodeBody->childNodes as $child) {
  $innerHTML .= $nodeBody->ownerDocument->saveXML($child);
}

I found out that the reason it creates the strange codes when there is a break is caused by saveXML($child)

So when I have something like this,

$content = '<p><br/><a href="#">xx</a></p>
<p><br/><a href="#">xx</a></p>';

It will return something like this,

<p><a href="#">xx</a></p>&#13;
<p><a href="#">xx</a></p>

But I want something this actually,

<p><a href="#">xx</a></p>
<p><a href="#">xx</a></p>

Possible duplicate of [How to saveHTML of DOMDocument without HTML wrapper?](https://stackoverflow.com/questions/4879946/how-to-savehtml-of-domdocument-without-html-wrapper) — miken32, Nov 02 '18 at 02:15

score 3 · Accepted Answer · answered Jul 27 '11 at 21:53

3

If you're working on a fragment, you normally need only the body contents.

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);
}

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));

answered Jul 27 '11 at 21:53

hakre

193,403
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435
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got it thank you! I don't know how to incorporate `tidy_repair_string` into my code though... but the `innerHTML` simulation works perfectly! – Run Jul 27 '11 at 22:15
just found out that the `innerHTML` simulation generate something strange. Please see my edit above. Thanks. – Run Jul 27 '11 at 22:26
That looks like an encoding issue on your end. Ensure you only pump UTF-8 encoded strings into DomDocument. And you could normalize line-breaks as well before. However you should read into the tidy library, it has years of experience and deals with encodings and line-breaks as well. – hakre Jul 27 '11 at 23:02
I use `tidy_repair_string()` to fix this issue `$fragment = tidy_repair_string($dom->saveHTML(), array('output-xhtml'=>1,'show-body-only'=>1)); return $fragment;` – Run Jul 27 '11 at 23:09
I have to make sure that the server has this `php_tidy` turned on. this could be a problem on a live server as some of them may not have this configured... – Run Jul 27 '11 at 23:11

score 0 · Answer 2 · answered Jul 27 '11 at 22:00

0

Hakre already mentioned the show-body-only option to HTML Tidy, which is probably what you want.

Ps. Here's the Tidy config file used by MediaWiki for pretty much just this purpose.

answered Jul 27 '11 at 22:00

Ilmari Karonen

49,047
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How to prevent the doctype from being added to the HTML?

2 Answers2

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