I want to use FTP server to upload my files.But I don't know is it necessary to change php.ini or httpd.conf(apache) to make my program fluency.And there is a function ftp_login(int ftp_stream, string username, string password).I don't know what's means of "ftp_stream".Can you give me a example.I think the example can explain all.So it is very important for me.