sybase_connect() establishes a connection to a Sybase server.
In case a second call is made to sybase_connect() with the same arguments, no new link will be established, but instead, the link identifier of the already opened link will be returned.
The link to the server will be closed as soon as the execution of the script ends, unless it's closed earlier by explicitly calling sybase_close().
servername
The servername argument has to be a valid servername that is defined in the 'interfaces' file.
username
Sybase user name
password
Password associated with username
.
charset
Specifies the charset for the connection
appname