forms - Best practices doing big file upload on the web with progressive enhancement -

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i'm building html form user should able upload big files ~100mb.

my users coming anywhere can't count on broadband connection, modern browser or availability of javascript/flash. users have these "extras" i'd offer better experience form of feedback on process , flexible form.

the thing can think of can go wrong server timeout. i've never built functionality i'd know other people's best practices , serious problems in area are.

not entirely relevant backend in php.

if backend php among other things need @ upload_max_filesize. configuration issues covered here. making app verify , act on parameters of runtime environment idea because increases fault tolerance.

using flash on frontend not recommend because tends fail large files. , without javascript, process feedback isn't possible @ except built-in features of browser. best experience can provide without javascript placing file upload form iframe containing page won't disappear during upload.

for normal scenarios using combination of apc , lightweight ajax choice. ibm website has implementation walkthrough on subject.


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