I have an FTP server that has been installed with an https domain, I tried to save data to the ftp server, when it is set to default, the user can't upload images, after I check the FTP folder the file has been entered but the size is 0 KB
I'm not sure what that stuff is that you're adding to the beginning of your posts but the code needs to be removed. You are using some span and language designation on it. This makes your posts not work out and we don't allow that extra code. If you are copying and pasting from something, please make sure you copy plain text.
I fixed your post. Please be sure you only put text and not code in your posts. If sharing code errors, use the code tag that is next to the smiley button.
Also please don't post your posts in the Website Feedback forum area if they are not feedback for this website. I have been having to move your posts.
Maybe this tutorial will help, https://socialengine.atlassian.net/wiki/spaces/SU/pages/5145112/SE+PHP+-+Storage+System , as it works with the external storage (VFS) as I've tested it with BryZar's external storage option. We use the setting for SSH with SSL servers though for it to be more secure.