PHP function that automates detecting if an open graph page has errors

Facebook Linter Errors

/**
 * Function to automate detecting if an open graph page has errors
 * Requires the dom php extension to be enabled
 *
 * @param string $url
 * @return array with keys 'hasError', 'errorType', and 'errorMessage'
 */
function facebookLinterErrors($url)
{
	$errorType = "";
	$errorMessage = "";
	$hasError = false;

	try {
		$linterPage = DOMDocument::loadHTMLFile("http://developers.facebook.com/tools/lint/?url=" . urlencode($url) . "&_fb_noscript=1");
		$error = $linterPage->getElementById('lint_error');
		if ($error != null && $error->hasChildNodes()) {
			$errorType = $error->lastChild->lastChild->firstChild->nodeValue;
			$errorMessage = $error->lastChild->lastChild->lastChild->nodeValue;
			$hasError = true;
		}
	} catch (Exception $e) {}

	return compact('hasError', 'errorType', 'errorMessage');		
}