//header("Content-type: text/html; charset=GB2312"); 没卵用！！！
$db = new \PDO("odbc:driver={microsoft access driver (*.mdb)};;charset=gbk;dbq=".realpath("zy.mdb")) or die("Connect Error");  
// $db -> exec('set names GB2312'); 没卵用！！！
//$db -> query("SET NAMES GB2312");  没卵用！！！
$rs = $db->query('select * from News where Id=2583'); 
$conteat = array();
 foreach ($rs->fetchAll() as $v){  
$conteat[$v['ID']] = $v;  
$conteat[$v['ID']]['Content'] = iconv('GB2312','UTF-8//IGNORE',$v['Content']);  //真有用的还是这一句
}
 echo "<pre>"; print_r($conteat); echo "</pre>";
exit;