php curl form upload questions

[TJaper]

Hello - I'm new to PHP and CURL but feel I have a decent handle on things.

I've trying to upload a file to a HTTP form. The form:

<form name="Form1" method="post" action="quote_upload.aspx" id="Form1" enctype="multipart/form-data">
<input type="hidden" name="__VIEWSTATE" value="fickshurt" />
<input name="file_path" id="file_path" type="file" />
<input type="submit" name="upload_quote" value="Upload" id="upload_quote" />

</form>

When I change 'post' to 'get' (to see exactly what is being sent), I get:

http:[...]/quote_upload.aspx?__VIEWSTATE=fickshurt&upload_quote=Upload

My question is, why isn't the 'file_path' field being sent along? How does the form action know where and what the file to upload is?

Thanks,
TJ

[NogDog]

As far as I know, a file type input can only be transmitted via the post method.

[TJaper]

I am not trying to send the file via GET rather than POST. I simply changed post to get to see the form output on the address line.

Instead of outputting all the form fields (VIEWSTATE, file_path and upload_quote), it sends only VIEWSTATE and upload_quote.

Why is this and how do I program php and libcurl to send a file to this form?

Thanks,
TJ

[NogDog]

The file information from a type="file" input field is not transmitted via the urlencoded form data, it is sent via a separate form data section of the HTTP transmission (as indicated by the enctype="multipart/form-data" attribute of your form tag). See: http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.2

Since the get method by definition only sends simple urlencoded data, it cannot send a form attachment (and its related data).