Does the login on the FTP server you are connected to. for that you first have
to connect to a FTP server before logging in. Username and Password can either be
set by the parameters or manually before (using the set-methods).
Paramètres
string $username = null - The username
to be used for login to. This parameter can be left out, if it has been set manually!
int $password = null - The password to use for
login. This parameter can be left out, if it has been set manually!
Valeur retournée
mixed - true on success, otherwise PEAR::Error.
Valeurs renvoyées
The returned PEAR_Error object in case of an error
is unspecific. You can ignore the errornumber and errormessage,
because only "Login failed" will be returned if the
login fails.
Note
Cette fonction ne peut pas être appelée de façon statique.