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().
The servername argument has to be a valid servername that is defined in the 'interfaces' file.
Sybase user name
Password associated with username.
Specifies the charset for the connection
$link = sybase_connect('SYBASE', '', '')
or die("Could not connect !");
echo "Connected successfully";