Get the Youtube Video Thumbnail from Youtube video Url using PHP

Question

Lets say I have a youtube video url www.youtube.com/watch?v=B4CRkpBGQzU&feature=youtube_gdata&par1=1&par2=2

I want to get the video thumbnail ->

Answer 1

$url = "http://youtube.com/watch?v=B4CRkpBGQzU";
$url = explode("&", $url);
$vidID = preg_match("|?v=(.*)|", $url);
$thumb_default = file_get_contents("http://img.youtube.com/vi/$vidID/default.jpg");

$thumb1 = file_get_contents("http://img.youtube.com/vi/$vidID/0.jpg");
$thumb2 = file_get_contents("http://img.youtube.com/vi/$vidID/1.jpg");
$thumb3 = file_get_contents("http://img.youtube.com/vi/$vidID/2.jpg");
$thumb4 = file_get_contents("http://img.youtube.com/vi/$vidID/3.jpg");