Codeigniter Sybase数据库配置

如果我使用ODBC连接到Sybase，我应该在database.php文件中使用什么设置

$db['default']['hostname'] = "";
$db['default']['username'] = "root";
$db['default']['password'] = "";
$db['default']['database'] = "database_name";
$db['default']['dbdriver'] = "";

我知道mysql的主机名是localhost，dbdriver是mysql。Sybase呢？主机名中应该放什么？司机呢？是ODBC吗

谢谢

 $db['default']['hostname'] = "Driver=Adaptive Server Anywhere 7.0;ENG=your_server_sybase  ;UID=youruser;PWD=yourpswrd;DBN='';LINKS=TCPIP(HOST=127.0.0.1:9000) " 

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主机=127.0.0.1:9000 端口9000

或 主机=127.0.0.1

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您正在尝试连接到哪个Sybase产品？ASE，在哪里？您下载了Sybase ODBC驱动程序吗？

 $db['default']['username'] = "";
 $db['default']['password'] = "";
 $db['default']['database'] = "";
 $db['default']['dbdriver'] = "odbc";