(PHP 4 >= 4.0.6, PHP 5, PHP 7)
fbsql_username — Get or set the username for the connection
Get or set the username used for the connection.
If optional and not specified, the function will try to find an open link to the FrontBase server and if no such link is found it will try to create one as if fbsql_connect() was called with no arguments.
If provided, this is the new username to set.
Returns the current username used with the connection, as a string.