function getContentType( $url )
{
	$headers = get_headers( $url );

	print_r( $headers );

	foreach( $headers as $header )
	{
		preg_match_all( "#Content-Type: (.[^\;]+)#i",  $header, $matches );

		if( !empty($matches[1][0]) )
		{
			return $matches[1][0];
		}
	}

	return "unknown";
}