Code about reading the Meta content of a Web site or giveup in 10 Seconds

[WorldNews]

Hello,

We want a code that would read the content of a Web site and return the following info:
Title
Description
Keywords

I have found and modified a code that does this in case of most web sites, but it fails in case of some web sites such as: www.uber.com

The code is below.
Can you suggest what to do with it to have it return nothing, such as NULL, if it cannot find such information about a Web site. And in case it cannot get such info say in 10 Seconds.

The code developed so far is:

function file_get_contents_curl($url)
{
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

    $data = curl_exec($ch);
    curl_close($ch);

    return $data;
}


if (isset($_POST['url'])) {

    $url = $_POST['url'];
    $html = file_get_contents_curl("$url");

    echo '<p>url: '. $url . '<p>';


    //parsing begins here:
    $doc = new DOMDocument();
    @$doc->loadHTML($html);
    $nodes = $doc->getElementsByTagName('title');


    if (isset($nodes)) {
        //get and display what you need:
        $title = $nodes->item(0)->nodeValue;
    }

    $metas = $doc->getElementsByTagName('meta');

    for ($i = 0; $i < $metas->length; $i++)
    {
        $meta = $metas->item($i);
        if($meta->getAttribute('name') == 'description')
            $description = $meta->getAttribute('content');
        if($meta->getAttribute('name') == 'keywords')
            $keywords = $meta->getAttribute('content');
    }


    if (isset($title)) {
        echo "Title: $title". '<br/><br/>';
    } 

    if (isset($description)) {
        echo "Description: $description". '<br/><br/>';
    } 

    if (isset($keywords)) {
        $kw_list = explode(', ', $keywords);

        echo 'KWs are:<br>';

        for ($i=0; $i<count($kw_list); ++$i) {
            echo '<br>' . $kw_list[$i];
        }
    } 


}

Thanks.
Dean