pg_tty() returns the TTY name that server
side debugging output is sent to on the given PostgreSQL
connection
resource.
Note: pg_tty() is obsolete, since the server no longer pays attention to the TTY setting, but the function remains for backwards compatibility.
connection
PostgreSQL database connection resource. When
connection
is not present, the default connection
is used. The default connection is the last connection made by
pg_connect() or pg_pconnect().