curl-partial-download.php

/**
*
* Using CURL to download partial content from a URL
*
* @url           file URL to download
* @range_start   Start range in bytes
* @range_end     End range in bytes
*
*
* example: curl_get_content("http://www.example.org/some-file.zip",100,500)
*
**/
function curl_get_content($url,$range_start,$range_end)
{
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt ($ch, CURLOPT_HTTPHEADER, array ("Range: bytes=$range_start-$range_end"));
	 
  $data = curl_exec($ch);		
  curl_close($ch);
		
  return $data;
}