Markdown "single page" PHP web application with live preview?

Question

I would like to know if there is a PHP web application, such that

• When called with something like http://example.com/index.php?inputfile=mymarkdownfile.txt; it will open the file mymarkdownfile.txt at the same location as index.php on the webserver, and render it as Markdown (i.e., it will convert the Markdown to HTML and serve it)
• There will be an "edit" button, which opens a "live preview" Markdown editor (like on StackExchange/StackOverflow sites)
• When you're done editing and click on the "save" button, previous version is archived on server (saved as text file mymarkdownfile-timestamp.txt), and the changed version is saved as mymarkdownfile.txt.
• If you try to "open" a "nonexisting file" (say, via http://example.com/index.php?inputfile=nonexistant.txt), then the editor starts first; and the content typed there will be saved as nonexistant.txt (and nonexistant-timestamp.txt)

I just need this for server based note taking, and I don't really need local linking or anything like that; nor user authentication nor protection (I'd intend to use this on local network, so I wouldn't be worried about public exposure of "edit" button and vandalism).

I imagine it could be a PHP page, which uses:

• PHP Markdown library for the initial conversion to HTML when the page request is first read
• pagedown - A JavaScript Markdown converter and editor (see also Is there any good Markdown Javascript library or control? - Stack Overflow) for when the editor is active..

Anything like that out there?

Many thanks in advance for any answers,
Cheers!

Answer 1

Well, given that I really needed something like this, I put together a small PHP script/application that does the above; called it the Single-page Markdown Web Editor (spmdwe); please see:

• http://sdaaubckp.sourceforge.net/spmdwe/

Hope this helps someone,
Cheers!