I've got a website having a directory listing of all of the pdf files which i've submitted via ftp. By clicking the file names, the pdf document can have up inside your internet browser. Is it feasible for outdoors parties to electronically signed the document within the internet browser and save it into the server having a appended "signed" around the file title.

My primary issue is:

1) saving the signed document into the server through the internet browser 2) alter the file title once the document is saved

It'll rely on your permissions but when the consumer downloads it via http (you've directory listing enabled in your website) they ought to not have the ability to save it to the website unless of course you ensure it is submitted.

I recommend reading through the PHP upload tutorial.

You may consider WebDAV, but I wouldn't recommend it.