/*$conn=odbc_connect('MsSql8','ccy','123456');$sql='select * from cj_users where userid_int = 2412';$exec=odbc_exec($conn,$sql);//執行語句while(odbc_fetch_array($exec)){$abc=odbc_result($exec,'uname');echo $abc;}*/按照這個方法是可以正常連接的，也有數據返回為什么用pdo這個方法會報錯$type = 'odbc';?$db_name = 'MsSql8';$host = '127.0.0.1';$username = 'ccy';$password = '123456';$dsn = "$type:host=$host;dbname=$db_name";try {$pdo = new PDO($dsn, $username, $password);?} catch (Exception $e) {die($e->getMessage());?}輸出的結果是SQLSTATE[IM002] SQLDriverConnect: 0 [Microsoft][ODBC 驅動程序管理器] 未發現數據源名稱并且未指定默認驅動程序