youtube v3 api, check if Video existing - php

Question

I've tried to check if a youtube video is online, not private, not deleted etc. I need it for a Video-Blog.
All of the code I've found and tried hadn't worked. I hope you can help me.
I've registered for the new API v3.
My code is as follows, but I always get "Bad Request 400"
$theURL = "https://www.googleapis.com/youtube/v3/videos?part=status&id=". get_post_meta($post->ID,"wpzoom_post_embed_code", true) ."&key=my_api_key";
// echo $theURL;
//$theURL = "http://www.youtube.com/oembed?url=http://www.youtube.com/watch?v=". get_post_meta($post->ID,"wpzoom_post_embed_code", true) ."&format=json";
$headers = get_headers($theURL);
print_r ($headers);
if (substr($headers[0], 9, 3) !== "404") {
echo "online";
} else {
echo "offline";
}

Answer 1

Found a solution. But I didn't figured it out, how can I display locked Videos as offline. I search in my curl data string for "totalResults": 0," cause I fetch at once one ID for video.
Here is my code. - Maybe someone has a better idea to fix this little problem.
$theURL = "https://www.googleapis.com/youtube/v3/videos?part=status&id=" . get_post_meta($post->ID, "wpzoom_post_embed_code", true) . "&key=my_api_key";
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$theURL);
curl_setopt($ch,CURLOPT_HEADER,1);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
$data = curl_exec($ch);
//var_dump($data);
if (strpos($data,'totalResults": 0,') !== false) {
echo '<span> <img src="link_for_button" alt="online"/> Offline</span><br />'; //echo "<span style='color:red;'>Video Offline</span>";
} else echo '<span><img src="link_for_button" alt="online"/> Online</span><br />'; //echo "<span style='color:green;'>Video Online</span>";