Upload POST data with files using cURL

Question

I want to use cURL not only to send data parameters in HTTP POST but also to upload a file with a specific form name. How can I do this?

HTTP POST parameters:

userid = 12345 filecomment = This is a picture file

HTTP file upload: File location = /home/user1/Desktop/test.jpg The form name of the file = image (corresponding to $_FILES['image'] on the PHP side)

I have found part of the cURL command as follows:

curl -d "userid=1&filecomment=This is a picture file" --data-binary @"/home/user1/Desktop/test.jpg " localhost/uploader.php

The problem I encountered is as follows:

Note: Undefined index in /var/www/uploader.php: image

The problem is that I am using $_FILES['image'] in the PHP script to receive the file.

How should I adjust my cURL commands accordingly?

Answer 1

Capture user id as path variable (recommended):

curl -i -X POST -H "Content-Type: multipart/form-data" 
-F "data=@test.mp3" http://mysuperserver/media/1234/upload/

Capture the user id as part of the form:

curl -i -X POST -H "Content-Type: multipart/form-data" 
-F "data=@test.mp3;userid=1234" http://mysuperserver/media/upload/

or:

curl -i -X POST -H "Content-Type: multipart/form-data" 
-F "data=@test.mp3" -F "userid=1234" http://mysuperserver/media/upload/

Answer 2

You need to use the -F option:
-F/--form <name=content> Specify HTTP multi-part POST data (H)

Please try the following:

curl \
  -F "userid=1" \
  -F "filecomment=这是一个图片文件" \
  -F "image=@/home/user1/Desktop/test.jpg" \
  localhost/uploader.php