Upload de fichier avec libcurl, définir "name" et autre.

#include <stdio.h>
#include <curl/curl.h>
#include <sys/stat.h>
#include <fcntl.h>

int main(void)
{
 CURL *curl;
 CURLcode res;
 struct stat file_info;
 double speed_upload, total_time;
 FILE *fd;

 fd = fopen("D:/sound.mp3", "rb"); /* open file to upload */
 if(!fd) {

   return 1; /* can't continue */
 }

 /* to get the file size */
 if(fstat(fileno(fd), &file_info) != 0) {

   return 1; /* can't continue */
 }

 curl = curl_easy_init();
 if(curl) {
   /* upload to this place */
   curl_easy_setopt(curl, CURLOPT_URL,
                    "http://dev.winlap.ch/libcurl");

   /* tell it to "upload" to the URL */
   curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);

   /* set where to read from (on Windows you need to use READFUNCTION too) */
   curl_easy_setopt(curl, CURLOPT_READDATA, fd);

   /* and give the size of the upload (optional) */
   curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
                    (curl_off_t)file_info.st_size);

   /* enable verbose for easier tracing */
   curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);

   res = curl_easy_perform(curl);
   /* Check for errors */
   if(res != CURLE_OK) {
     fprintf(stderr, "curl_easy_perform() failed: %s\n",
             curl_easy_strerror(res));

   }
   else {
     /* now extract transfer info */
     curl_easy_getinfo(curl, CURLINFO_SPEED_UPLOAD, &speed_upload);
     curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &total_time);|

     fprintf(stderr, "Speed: %.3f bytes/sec during %.3f seconds\n",
             speed_upload, total_time);

   }
   /* always cleanup */
   curl_easy_cleanup(curl);
 }
 return 0;
}

<?php
if(isset($_FILES['upload']))
{
  echo 'FICHIER RECU';
}
else
{
  echo 'ERREUR';
}