I need to upload multiple files to a server using the curl command line utility. for a single file I have no problem using:
curl -F "image=@file1.gif" how would I do this with more than one file so that the php variable $_FILES["image"]["error"] would return an array?
I've tried
curl -F "image=@file1.gif" -F "image=@file2.gif" curl -F "image=@file1.gif,image=@file2.gif" but these are a stab in the dark.
2 Answers
The trick is to name the file uploading parameters unique.
curl -F "image=@file1.gif" -F "image2=@file2.gif" This will show up in the $_FILES superglobal as $_FILES['image'] and $_FILES['image2'].
To make the files grouped under one $_FILES index you need to name the parameters as arrays:
curl -F "image[]=@file1.gif" -F "image[]=@file2.gif" You can use curl_multi_init(). I was working on a project, and since I'm a newbie, not even a year probably, it was terrible hard for me. I needed to upload to a server using an api (anonfiles.com)
NOTE: My script is based on multiple files input from users. The code is as follows.
<?php if (isset($_POST['btnUpload'])){ $total = count($_FILES['file']['name']); for( $i=0 ; $i < $total ; $i++ ) { $filename = $_FILES['file']['name'][$i]; $filedata = $_FILES['file']['tmp_name'][$i]; $filetype = $_FILES['file']['type'][$i]; $chfile = new CURLFile($filedata, $filetype, $filename); //creating a CURL object $request[]=['file'=>$chfile]; //making an asscoiative array with [1]=>['file'=>'curlobject'] and so on $urls[] = "";//added this each time because this was the only one url } print_r($request);//just for verification echo "<br>"; print_r($urls);//verification echo "<br>"; echo "<br>"; $mh = curl_multi_init(); //initialise multi curl foreach ($urls as $key => $url) { $chs[$key] = curl_init($url); //set your own opts, these are the minimum required curl_setopt($chs[$key], CURLOPT_RETURNTRANSFER, true); curl_setopt($chs[$key], CURLOPT_POST, true); curl_setopt($chs[$key], CURLOPT_POSTFIELDS, $request[$key]);//adding file data curl_setopt($chs[$key], CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data'));//make sure this header is there for it to act like data curl_multi_add_handle($mh, $chs[$key]);//add them to the handle that we initialised } //running the requests $running = null; do { curl_multi_exec($mh, $running); } while ($running); //getting the responses $responsearray = array();//Just to store the responses foreach(array_keys($chs) as $key){ $error = curl_error($chs[$key]); $last_effective_URL = curl_getinfo($chs[$key], CURLINFO_EFFECTIVE_URL); $time = curl_getinfo($chs[$key], CURLINFO_TOTAL_TIME);//response time $response = curl_multi_getcontent($chs[$key]); // get results array_push($responsearray, $response); curl_multi_remove_handle($mh, $chs[$key]);//removing it as a handle } // close current handler curl_multi_close($mh); echo "<br>"; echo "<br>"; echo "<br>"; echo "<br>"; print_r($responsearray); } 
