get_link.php

<?php
function get_link($videoid)
{
		$data = file_get_contents('http://youtube.com/get_video_info?video_id=' . $videoid . '&fmt=18&asv=2&hd=1');
		parse_str($data , $details);
		$my_formats_array = explode(',' , $details['adaptive_fmts']);
		
		$avail_formats[] = '';
		$i = 0;
		$ipbits = $ip = $itag = $sig = $quality_label = '';

		$expire = time();
		foreach ($my_formats_array as $format) 
		{
			parse_str($format);
			$avail_formats[$i]['itag'] = $itag;
			$avail_formats[$i]['quality'] = $quality_label;
			$type = explode(';', $type);
			$avail_formats[$i]['type'] = $type[0];
			$avail_formats[$i]['url'] = urldecode($url) . '&signature=' . $sig;

			parse_str(urldecode($url));
			$avail_formats[$i]['expires'] = date("Y-m-d H:i:s", $expire);
			$avail_formats[$i]['ipbits'] = $ipbits;
			$avail_formats[$i]['ip'] = $ip;
			$i++;
		}
		
		return $avail_formats;
}