[SOLVED] Getting the contents of a certain div.

[Michdd]

I'm using file_get_contents on a file, I need to be able to get only the contents of a certain div named center. So I need to get <div id="center"> (this stuff) </div>. How can I get only that?

[Daniel0]

DOM

[Michdd]

Can't this be done simply with regex ???

[N-Bomb(Nerd)]

Perhaps this is what you're searching for:

/<div id="center">([^<]+)<\/div>/i

[Michdd]

After reading a little more about the DOM class it seems like it might be the better method. It looks a bit like javascript. 'getElementById'. However how can I get the contents of that div?:

 

$doc = new DomDocument;
$doc->validateOnParse = true;
$doc->Load($_GET['page'] . '.php');

echo $doc->getElementById('center');

 

Of course that won't work, but is there another pointer to get the contents of that div?

[.josh]

regex is not really good for that sort of thing.  It does not handle nested tags very well.  Stick with DOM.

 

[Michdd]

regex is not really good for that sort of thing.  It does not handle nested tags very well.  Stick with DOM.

Okay, then can you answer my above question? Can I get the html contained in an element from getElementById? In Javascript it would be .innerHTML, but I can't find the PHP equiv.

[Daniel0]

<?php
function getInnerHTML(DOMElement $node)
{
$body = $node->ownerDocument->documentElement->firstChild->firstChild;
$document = new DOMDocument();    
$document->appendChild($document->importNode($body,true));
return $document->saveHTML();
}

$doc = new DOMDocument();
$doc->LoadHTMLFile('http://www.phpfreaks.com/');

echo getInnerHTML($doc->getElementById('header'));

 

Output:

<title>PHP Freaks - Index</title>

[Michdd]

That seems to be only outputting:

 

<meta http-equiv="Content-Type" content="text/html;charset=utf-8"> 

(which isn't even within that div)

 

When I'm trying to get the contents of the <div id="center"> on page 'about.php' using:

 

<?php
function getInnerHTML(DOMElement $node)
{
$body = $node->ownerDocument->documentElement->firstChild->firstChild;
$document = new DOMDocument();    
$document->appendChild($document->importNode($body,true));
return $document->saveHTML();
}

$doc = new DOMDocument();
$doc->LoadHTMLFile('about.php');

echo getInnerHTML($doc->getElementById('center'));

[Daniel0]

Sorry, something like this:

 

$doc = new DOMDocument();
$doc->LoadHTMLFile('http://www.phpfreaks.com/');

$d = new DOMDocument();
$d->appendChild($d->importNode($doc->getElementById('header'), true));

$html = trim(preg_replace('#(^<[^>]+>|</[^>]+>$)#', '', $d->saveHTML()));