PHP - Fatal error: Call to a member function getNamedItem() on a non-object in...

Question

Ever seen that error? Yeah? Cause i've been sitting here for over 3 hours now trying to figure out why it's there. :(

The URL passed in is correct, and the iframe on the page does exist.

$doc = new DOMDocument();
@$doc->load($url);
$lst = $doc->getElementsByTagName('iframe');
$iframe = $lst->item(0);
$returnLinks[] = $iframe->attributes->getNamedItem('src')->value; // this line is causing the error!

Any ideas what's up? Here's the error once again:

Fatal error:  Call to a member function getNamedItem() on a non-object in ....

If it matters, that codeblock is placed within a loop.

Answer 1

[EDIT]: If all you want is src:

<?php
    $data = '<iframe src ="html_intro.asp" width="100%" height="300">
      <p>Your browser does not support iframes.</p>
    </iframe>';

    $doc = new DOMDocument();
    @$doc->loadHTML($data);
    $lst = $doc->getElementsByTagName('iframe');
    $iframe = $lst->item(0);

    echo $iframe->getAttribute ('src');

    //Output: html_intro.asp
?>

Old Answer:

attributes is a function not a property. Do it like this:

 $returnLinks[] = $iframe->attributes()->getNamedItem('src')->value;

Answer 2

Apparently, $iframe->attributes is not evaluating to an object, try var_dump($iframe->attributes)