This method works in the same way as
File_SMBPasswd::modAccountEncrypted(), except the password has to be given as plaintext. The encryption
is done internaly.
Parameter
string $user - username to be modified
int $userid - userid of the user
string $pass - plaintext-password
string $comment - comment
string $flags - flags
Return value
mixed - Returns TRUE on success,
PEAR_Error on failure.