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PHP, ColdFusion and ASP all make use of a standard HTML form with a
"File" type Input. Browsers that support the File Input include
Netscape Navigator 3 or later, Microsoft Internet Explorer 3 with
a patch from Microsoft, or later without a patch.
ColdFusion
The CFFILE tag includes the "Upload" action for receiving an uploaded file.
When ACTION="Upload" is used, six other attributes are available for use.
With these attributes you can specify (among other things) which file
(MIME) types should be accepted, where to save the file on the server,
and the attribute to set for the file (e.g., ReadOnly, Archive, Hidden,
etc.). You can also specify what to do if a file with the same name
already exists in the designated save location.
ASP
To receive an uploaded file with ASP you will have to install a server
component. Microsoft offers Posting Acceptor. A widely used 3rd party
upload component is SA-FileUp available from
http://www.softartisans.com
which also includes file download and file management components,
which allow you to simply and easily download files from the web
server to the user's browser, manipulate files, and perform other functions.
PHP
With PHP's authentication and file manipulation functions, you have
full control over who is allowed to upload and what is to be done with
the file once it has arrived.
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