[Javascript] Resizing images client-side

[Glenn E. Lanier, II]

> From: Hassan Schroeder
> Sent: Friday, July 13, 2007 2:49 PM
> To: [JavaScript List]
> Subject: Re: [Javascript] Resizing images client-side
> 
> Terry Riegel wrote:
> 
> > PHP only knows about the files after they are uploaded. 
> This is why upload 
> > scripts are usually either ASP or PERL.
> 
> ? And through what mystical process would a program written in *any*
> language running on a remote server peek into the file system of the
> user's machine and determine the file size *before* it's uploaded? :-)

I think you can look in the POST/GET headers to see the size of the data
envelope in most languages. I know C++ based ISAPI allows you to access this
information before receiving the entire POSTed info (GET has size limits, so
does not apply here). I would assume ASP.NET provides access to similar;
don't know about PHP but it may "protect" the developer from seeing all the
particulars.

--G