How to fix error when getting data from Youtube api?

Question

YouTube

Hello, I have this function:

public static function getYoutubeSubscribers($username) {
        $username = trim($username);
        if (!$username)
            return 0;

        $link = 'http://gdata.youtube.com/feeds/api/users/' . strtolower($username); 
        $info = self::curlGetContent($link); 
        $xmlData = str_replace('yt:', 'yt', $info); 
        $xml = new SimpleXMLElement($xmlData); 
        $subs = $xml->ytstatistics['subscriberCount']; 
        return($subs);
    }

Function in Joomla template. On the line $xml = new SimpleXMLElement($xmlData); gives an error message:

Fatal error: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in D:\OpenServer\domains\localhost\buh.tv\templates\it_premiere\icetools\icetool.php:219 Stack trace: #0 D:\OpenServer\domains\localhost\buh.tv\templates\it_premiere\icetools\icetool.php(219): SimpleXMLElement->__construct('No longer avail...') #1 D:\OpenServer\domains\localhost\buh.tv\templates\it_premiere\icetools\layout_vars.php(44): iceTool::getYoutubeSubscribers('icetheme') #2 D:\OpenServer\domains\localhost\buh.tv\templates\it_premiere\index.php(29): require_once('D:\OpenServer\d...') #3 D:\OpenServer\domains\localhost\buh.tv\libraries\joomla\document\html\html.php(531): require('D:\OpenServer\d...') #4 D:\OpenServer\domains\localhost\buh.tv\libraries\joomla\document\html\html.php(591): JDocumentHTML->_loadTemplate('D:\OpenServer\d...', 'index.php') #5 D:\OpenServer\domains\localhost\buh.tv\libraries\joomla\document\html\html.php(414): JDocumentHTML->_fetchTemplate(Array) #6 D:\OpenServer\domains\localhost\buh.tv\includes\application.php(259): JDocumentHTML->parse(Array) #7 D:\OpenServer\domains\localhost\buh.tv\index.php(48): JSite->render() #8 {main} thrown in D:\OpenServer\domains\localhost\buh.tv\templates\it_premiere\icetools\icetool.php on line 219

Because of what it can be and how to solve it?
There are suspicions towards Youtube authentication, can it be?

Answer 1

THIS IS AN OLD API, IT DOESN'T WORK NO LONGER.
An example of how to get v3 api.
www.dulsky.eu/v
In the manuals of Google, everything is written.

Answer 2

An exception is thrown that is not caught.
In try ... catch wrap everything.
ps exception due to the fact that the data cannot be parsed.