How do I check if a video exists on YouTube, using PHP?

Question

How do I check if a video exists on YouTube, using PHP?

Answer 1

/**
* Check youtube url, check video exists or not,
*
* @param $url full youtube video url
*
* @return string - yotube video id
*/  
public static function checkYoutube($url) 
{
    if (preg_match('%(?:youtube(?:-nocookie)?\.com/(?:[^/]+/.+/|(?:v|e(?:mbed)?)/|.*[?&]v=)|youtu\.be/)([^"&?/ ]{11})%i', $url, $match)) 
    {   
        $headers = get_headers('http://gdata.youtube.com/feeds/api/videos/' . $match[1]);

        if (strpos($headers[0], '200')) 
        {
            return $match[1];
        } 

        return false;   
    } 

    return false;
} 

link:

https://github.com/DimitriMikadze/php-helpers