PHP FTP Transfere Script

I need a php script which transferes all files in one sub folder (several gb) to a fixed ftp server. the destination folder name will be given by a parameter the transfere must be checked and in case of failing to transfere a file there must be a number of retries to transfere the file. after successful transfere of a file the origin file must be renamed (eg by adding ".sent") the current status has to be written to a separate file in the origin folder (eg "status.txt" containing "transfering file 2 of 20") after successful transfere of all files the status must contain a final message "transfere successful" if transfere fails the status file must contain "transfere fails" it must be possible to run the script again. if files are found in the destination folder, they will be moved to a subfolder