Can anyone give me an example for PHP's CURLFile class?

Question

I had a very simple PHP code to upload a file to a remote server; the way I was doing it (as has been suggested here in some other solutions) is to use cUrl to upload the fi

Answer 1

Php POST request send multiple files with curl function:

<?php
    $file1 = realpath('ads/ads0.jpg');
    $file2 = realpath('ads/ads1.jpg');
    // Old method
    // Single file
    // $data = array('name' => 'Alexia', 'address' => 'Usa', 'age' => 21, 'file' => '@'.$file1);    
    // $data = array('name' => 'Alexia', 'address' => 'Usa', 'age' => 21, 'file[0]' => '@'.$file1, 'file[1]' => '@'.$file2);
    // CurlFile method   
    $f1 = new CurlFile($file1, mime_content_type($file1), basename($file1)); 
    $f2 = new CurlFile($file2, mime_content_type($file2), basename($file2)); 
    $data = array('name' => 'Alexia', 'address' => 'Usa', 'age' => 21, 'file[1]' => $f1, 'file[2]' => $f2);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'https://url.x/upload.php');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false); // !!!! required as of PHP 5.6.0 for files !!!
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);    
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); // 1, 2
    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
    // curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $res2 = curl_exec($ch);
    echo $res2;
?>

<?php
    // upload.php
    $json = json_decode(file_get_contents('php://input'), true);
    if(!empty($json)){ print_r($json); }
    if(!empty($_GET)){ print_r($_GET); }
    if(!empty($_POST)){ print_r($_POST); }
    if(!empty($_FILES)){ print_r($_FILES); }
?>

Answer 2

There is a snippet on the RFC for the code: https://wiki.php.net/rfc/curl-file-upload

curl_setopt($curl_handle, CURLOPT_POST, 1);
$args['file'] = new CurlFile('filename.png', 'image/png', 'filename.png');
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $args);

You can also use the seemingly pointless function curl_file_create( string $filename [, string $mimetype [, string $postname ]] ) if you have a phobia of creating objects.

curl_setopt($curl_handle, CURLOPT_POST, 1);
$args['file'] = curl_file_create('filename.png', 'image/png', 'filename.png');
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $args);

Answer 3

Thanks for your help, using your working code I was able to solve my problem with php 5.5 and Facebook SDK. I was getting this error from code in the sdk class.

I don't thinks this count as a response, but I'm sure there are people searching for this error like me related to facebook SDK and php 5.5

In case someone has the same problem, the solution for me was to change a little code from base_facebook.php to use the CurlFile Class instead of the @filename.

Since I'm calling the sdk from several places, I've just modified a few lines of the sdk:

In the method called "makeRequest" I made this change:

In this part of the code:

if ($this->getFileUploadSupport()){
    $opts[CURLOPT_POSTFIELDS] = $params;
} else {
    $opts[CURLOPT_POSTFIELDS] = http_build_query($params, null, '&');
}

Change the first part (with file upload enabled) to:

if ($this->getFileUploadSupport()){
  if(!empty($params['source'])){
     $nameArr = explode('/', $params['source']);
     $name    = $nameArr[count($nameArr)-1]; 
     $source  = str_replace('@', '', $params['source']);
     $size    = getimagesize($source); 
     $mime    = $size['mime'];
     $params['source'] = new CurlFile($source,$mime,$name);
  }

  if(!empty($params['image'])){
     $nameArr = explode('/', $params['image']);
     $name    = $nameArr[count($nameArr)-1]; 
     $image   = str_replace('@', '', $params['image']);
     $size    = getimagesize($image); 
     $mime    = $size['mime'];
     $params['image'] = new CurlFile($image,$mime,$name);
  }
  $opts[CURLOPT_POSTFIELDS] = $params;
} else {
    $opts[CURLOPT_POSTFIELDS] = http_build_query($params, null, '&');
}

Maybe this can be improved parsing every $param and looking for '@' in the value.. but I did it just for source and image because was what I needed.

Answer 4

CURLFile has been explained well above, but for simple one file transfers where you don't want to send a multipart message (not needed for one file, and some APIs don't support multipart), then the following works.

$ch = curl_init('https://example.com');

$verbose = fopen('/tmp/curloutput.log', 'w+'); // Not for production, but useful for debugging curl issues.

$filetocurl = fopen(realpath($filename), 'r');

// Input the filetocurl via fopen, because CURLOPT_POSTFIELDS created multipart which some apis do not accept.

// Change the options as needed.

$options = array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => array(
        'Content-type: application/whatever_you_need_here',
        'Authorization: Basic ' . $username . ":" . $password) // Use this if you need password login
    ),
    CURLOPT_NOPROGRESS => false,
    CURLOPT_UPLOAD => 1,
    CURLOPT_TIMEOUT => 3600,
    CURLOPT_INFILE => $filetocurl,
    CURLOPT_INFILESIZE => filesize($filename),
    CURLOPT_VERBOSE => true,
    CURLOPT_STDERR => $verbose  // Remove this for production
);

if (curl_setopt_array($ch, $options) !== false) {
    $result = curl_exec($ch);
    $info = curl_getinfo($ch);
    curl_close($ch);
} else {
    // A Curl option could not be set. Set exception here
}

Note the above code has some extra debug - remove them once it is working.

Answer 5

FOR curl_setopt(): The usage of the @filename API for file uploading is deprecated. Please usethe CURLFile class instead

$img='image.jpg';

$data_array = array(
        'board' => $board_id,
        'note' => $note,
        'image' => new CurlFile($img)
    );

$curinit = curl_init($url);
     curl_setopt($curinit, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($curinit, CURLOPT_POST, true);
     curl_setopt($curinit, CURLOPT_CUSTOMREQUEST, "POST");
     curl_setopt($curinit, CURLOPT_POSTFIELDS, $data_array);
     curl_setopt($curinit, CURLOPT_SAFE_UPLOAD, false);
     $json = curl_exec($curinit);
     $phpObj = json_decode($json, TRUE);  
     return $phpObj;