<?php
class Nation
{
	var $code;

	function __construct($mycode)
        {
        	$this->code = $mycode;
        }

        function pop()
        {
                 return $this->lookup("pop");
        }
        function area()
        {
                 return $this->lookup("area");
        }
        function pop_density()
        {
                  return $this->pop() / $this->area();
        }
        function lookup($item)
        {
                  $db = mysql_connect("euclid.nmu.edu", "randy", "");
                  mysql_select_db("nations", $db);

                  $query = "select $item from nations where code = '$this->code';";
                  #echo $query;
                  $result = mysql_query($query, $db);
                  $ans = mysql_fetch_row($result);
                  return $ans[0];
         }
}
?>