PHP FTP로 파일 업로드

$ftp_server='kkk.net';//serverip
$conn_id = @ftp_connect($ftp_server);

// login with username and password
$user="kkk";
$passwd="aaa";
$login_result = @ftp_login($conn_id, $user, $passwd);

//directorylike /www.velibaba.com/images
@ftp_chdir($conn_id, "public_html/report_files");

// upload the file
$upload = @ftp_put($conn_id, $filename, $file, FTP_BINARY);

// close the FTP stream
@ftp_close($conn_id);