class DbHelpClass
{
private $conn;
private $qxId;
private $ret; function __construct()
{
$path="../../App_Data/sd#f#45G_!.mdb";
$constr="DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=".realpath($path);
$this->conn= new PDO("odbc:$constr") or die ("PDO Connection faild.");

} /*读取*/
function Read($sql,$params=array())
{
$bind=$this->conn->prepare($sql);
$arrKeys=array_keys($params);
foreach($arrKeys as $row)
{
$bind->bindValue(":".$row,$params[$row]);
}
$bind->execute() or die('sql error:'.$sql);
$result=$bind->fetchAll(); return $result;
} /*添加,修改需调用此方法*/
function Edit($sql,$params[$row]); } $a=$bind->execute() or die('sql error');
return $a;
}
}
$dbh =new DbHelpClass();