PHP XPath to change stylesheet

Question

I use xpath to change stylesheet of href of stylesheet <link> in header.

But it doesn't work at all.

$html=file_get_contents('http://stackoverflow.com');
$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$css_links = $xpath->evaluate("//link[@type='text/css']");
for ($i = 0; $i < $css_links->length; $i++) 
{
    $csslink = $css_links->item($i);
    $oldurl = $csslink->getAttribute('href');
    $newURL='http://example.com/aaaa.css';
    $csslink->removeAttribute('href');
    $csslink->setAttribute('href', $newURL);
}
echo $html;

Is fopen wrappers enabled to get content from external source? And why do you suppress error message with @-notation? Maybe there is your answer. — Mamuz
– Mamuz, Commented Sep 21, 2013 at 20:36

Vyktor · Accepted Answer · 2013-09-21 20:44:09Z

1

You're using @$doc->loadHTML(html); instead of @$doc->loadHTML($html); (note the $), otherwise it works.

Also use echo $doc->SaveHtml() instead of echoing $html.

Working example here.

You also can replace for($i...) with foreach because DOMNodeList implements Traversable:

foreach ($css_links as $csslink) 
{
    $oldurl = $csslink->getAttribute('href');

edited Sep 21, 2013 at 20:44

answered Sep 21, 2013 at 20:38

Vyktor

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