PHP’s loadHTML, xpath, and comments

I’m reading an HTML file for modification using xpath, and in doing so I’m trying to read the contents of a javascript script tag so that I can extract some variable names from it. I had it working when I was using loadXML, but I switched over to loadHTML after I ran into problems with it. Before, I had:

[code=php]$query = $xpath->query(“//script/comment()”);
$string = htmlentities($query->item(0)->nodeValue);[/code]

However, after loading my file via loadHTML, this no longer seems to work. The script is encased in <!– //<![CDATA[ and //]]> –>

The entirety of what I’m loading in:

[code=php]
$course_dom = new DOMDocument();
@$course_dom->loadHTML($string);

$xpath = new DOMXPath($course_dom);
$query = $xpath->query(“//script/comment()”);
$string = htmlentities($query->item(0)->nodeValue);

[/code]

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