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Answer 1

+1 A:

You might consider DOMDocumentFragment rather than DOMDocument if you don't want headers.

As for the id problem, this is from the manual:

<?php

$doc = new DomDocument;

// We need to validate our document before refering to the id
$doc->validateOnParse = true;
$doc->Load('book.xml');

echo "The element whose id is books is: " . $doc->getElementById('books')->tagName . "\n";

?>

validateOnParse is likely the issue.

dnagirl 2010-03-19 14:14:03

I'll look into that. Do you know why I am not getting the element?

AntonioCS 2010-03-19 14:19:05

Answer 2

A:

Someone worked around this problem in the PHP manual by using XPath: http://us3.php.net/manual/en/domdocument.getelementbyid.php#96500

dan 2010-03-19 14:21:50

Yeah I read that one. I was just hoping this way would work. Thanks

AntonioCS 2010-03-19 14:32:47

I think the solution might just be to reload the savehtml code given by the domdocument. I tried this and it did seem to work

AntonioCS 2010-03-19 14:34:14

Answer 3

+2 A:

It seems that the DOMDocument will not play nice with HTML fragments. You may want to either consider the DOMDocumentFragment (as dnagirl suggests) or consider extending the DOMDocument.

After a little research, I've put together a simple extension that will achieve what you are asking:

class MyDOMDocument extends DOMDocument {

    function getElementById($id) {

        //thanks to: http://www.php.net/manual/en/domdocument.getelementbyid.php#96500
        $xpath = new DOMXPath($this);
        return $xpath->query("//*[@id='$id']")->item(0);
    }

    function output() {

        // thanks to: http://www.php.net/manual/en/domdocument.savehtml.php#85165
        $output = preg_replace('/^<!DOCTYPE.+?>/', '',
                str_replace( array('<html>', '</html>', '<body>', '</body>'),
                        array('', '', '', ''), $this->saveHTML()));

        return trim($output);

    }

}

Usage

$dom = new MyDOMDocument();
$dom->loadHTML($code);

var_dump($dom->getElementById("galeria_list"));

echo $dom->output();

Bauer 2010-03-19 14:22:09

Thanks for the code :)

AntonioCS 2010-03-19 14:33:24

Answer 4

+2 A:

It seems that loadhtml() does not "attach" the html dtd that defines id as an id-attribute to the DOM. But if the html document contains a DOCTYPE declaration it works as intended. (But my guess is you don't want to add a doctype and html skeleton, anyway:).

$code = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"&gt;
<html><head><title>...</title></head>
<body>
  <h1>Galeria </h1>
  <div class="galeria">
    <ul id="galeria_list">
      <li>
        <img src="img.jpg" width="350" height="350" />
        <br />
        Teste
      </li>
    </ul>
  </div>
</body></html>';

$dom = new DOMDocument;
$dom->loadhtml($code);
var_dump($dom->getElementById('galeria_list'));

VolkerK 2010-03-19 14:29:47

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