Youtube API v3 Duration?

Question

YouTube

Hi all!
I'm trying to get the duration of a youtube video, I looked through all the information on stackoverflow, but for some reason the request does not work for me!
Can you tell me what's wrong, I don't know what to do anymore?
Here is my code (Outputs nothing!):

$videoID = "YPVXlGY_tAc";
$apikey = "AIzaSyBA0L0QG8E5eVZlu-GEOeI5Ir3cr54zips";
$get_video = file_get_contents("https://www.googleapis.com/youtube/v3/videos?id=$videoID&key=$apikey&part=contentDetails");
$content = json_decode($get_video, true);
foreach ($content['items'] as $details) {
  $duration = $details['contentDetails']['duration'];
  echo("Длительность: ".$duration);
}

Answer 1

Perhaps your key does not fit.

PHP Warning:  file_get_contents(https://www.googleapis.com/youtube/v3/videos?id=YPVXlGY_tAc&key=AIzaSyBA0L0QG8E5eVZlu-GEOeI5Ir3cr54zips&part=contentDetails): failed to open stream: HTTP request failed! HTTP/1.0 403 Forbidden
 in php shell code on line 1

Check if you are making API requests from the same IP

{
"error": {
"errors": [
{
"domain": "usageLimits",
"reason": "ipRefererBlocked",
"message": "There is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your API key configuration if request from this IP or referer should be allowed.",
"extendedHelp": "https://console.developers.google.com"
}
],
"code": 403,
"message": "There is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your API key configuration if request from this IP or referer should be allowed."
}
}