PHP中ODBC连接字符串的可用参数

Question

I'm using odbc_connect() to connect to Sybase ASE server. Now I'm using the string like this:

odbc_connect("DSN=DsnName;
              charset=utf8;
              clientcharset=utf8;
              KeepOrgMultibyte=1;
              app=$appname", 
              $user, 
              $password);

But now I faced a need to specify some more options and I tried to find what can I add. Here we can see some options available but they aren't actually exhaustive because option like clientcharset works fine. Also I need to add MinPoolSize and MaxPoolSize as mentioned here, but I don't know will it work or not. So where I can find all available option that I can specify in connection string?