Can't get website meta description over tor network using PHP

Dear friends I'm trying make a interesting project that we can enter a tor .onion address and find the website title and meta description related to it. So here is my code,

<?php 

$ch = curl_init('http://torchdeedp3i2jigzjdmfpn5ttjhthh5wbmda2rr3jvqjg5p77c54dqd.onion');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_PROXYTYPE      => CURLPROXY_SOCKS5_HOSTNAME,
    CURLOPT_PROXY          => '127.0.0.1:9150',
    CURLOPT_HEADER         => 0,
    CURLOPT_FOLLOWLOCATION => 1,
    CURLOPT_ENCODING       => '',
    CURLOPT_COOKIEFILE     => '',
]);

$response = curl_exec($ch);

if ($response === false) {
    echo sprintf(
        "Request failed.  Error (%d) - %s\n",
        curl_errno($ch),
        curl_error($ch)
    );
    exit;
}

if (preg_match('/\<title\>(.*)\<\/title\>/i', $response, $match)) {
    echo "The title is '{$match[1]}'";
} else {
    echo "Did not find title in page.";
}

echo "<br></br><br>";

$tags = get_meta_tags($response);
echo $tags['description'];  // a php manual

 ?>

Actually i got the title of the website correctly. But my problem arise when i'm going to get the meta description of the .onion website. Here is a screenshotenter image description here

please help me. What is wrong with my php code

You may use DOMDocument to do the data parsing (I've tested in my server and it works):

Please replace:

$tags = get_meta_tags($response);
echo $tags['description'];  // a php manual

by

//parsing begins here:
$doc = new DOMDocument();
@$doc->loadHTML($response);

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

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

echo "Description: $description". '<br/><br/>';
echo "Keywords: $keywords";