codeigniter - Curl not posting file in PHP -

i using brightcove api upload video files server brightcove account. had working following code:

$fields = array(     'json' => json_encode( array(         'method' => "create_video",         'params' => array(             'video' => array(                 'name' => $video->submission_by_name.' '.time(),                 'shortdescription' => $video->submission_question_1             ),             "token" => $this->config->item('brightcove_write_token'),             "encode_to" => "mp4",             "create_multiple_renditions" => "true"         ))     ),     'file' => new curlfile(fcpath.'assets/uploads/submitted/'.$video->filename) );  //open connection $ch = curl_init(); curl_setopt($ch,curlopt_url, $this->config->item('brightcove_write_endpoint')); curl_setopt($ch,curlopt_post, count($fields)); curl_setopt($ch,curlopt_postfields, $fields); curl_setopt($ch, curlopt_returntransfer, true);  //execute post $result = json_decode(curl_exec($ch)); 

this working locally live server running php 5.3 can't use new curlfile()

how achieve sending file in way work php 5.3.3? tried changing file filed use @ syntax instead so:

'file' => '@' . fcpath.'assets/uploads/submitted/'.$video->filename 

but doesn't seem work, api returns error saying:

filestreamrequirederror: upload requires multipart/form-data post valid filestream 

so looks file isn't being posted through.

i've tried copying curl_file_create function so:

private function custom_curl_file_create($filename, $mimetype = '', $postname = '') {     if($mimetype=='') {         $mimetype = mime_content_type($filename);     }     return "@$filename;filename="         . ($postname ?: basename($filename))         . ($mimetype ? ";type=$mimetype" : ''); } 

and doing:

'file' => $this->custom_curl_file_create(fcpath.'assets/uploads/submitted/'.$video->filename) 

this doesn't work either though, api returns same error before

there "@" issue on multipart post requests apparently. found following information solved problem:

solution php 5.5 or later: - enable curlopt_safe_upload. - use curlfile instead of "@".  solution php 5.4 or earlier: - build multipart content body youself. - change "content-type" header yourself.  following snippet :d  <?php  /** * safe multipart post request php5.3 ~ php 5.4. *  * @param resource $ch curl resource * @param array $assoc "name => value" * @param array $files "name => path" * @return bool */ function curl_custom_postfields($ch, array $assoc = array(), array $files = array()) {      // invalid characters "name" , "filename"     static $disallow = array("\0", "\"", "\r", "\n");      // build normal parameters     foreach ($assoc $k => $v) {         $k = str_replace($disallow, "_", $k);         $body[] = implode("\r\n", array(             "content-disposition: form-data; name=\"{$k}\"",             "",             filter_var($v),          ));     }      // build file parameters     foreach ($files $k => $v) {         switch (true) {             case false === $v = realpath(filter_var($v)):             case !is_file($v):             case !is_readable($v):                 continue; // or return false, throw new invalidargumentexception         }         $data = file_get_contents($v);         $v = call_user_func("end", explode(directory_separator, $v));         $k = str_replace($disallow, "_", $k);         $v = str_replace($disallow, "_", $v);         $body[] = implode("\r\n", array(             "content-disposition: form-data; name=\"{$k}\"; filename=\"{$v}\"",             "content-type: application/octet-stream",             "",             $data,          ));     }      // generate safe boundary      {         $boundary = "---------------------" . md5(mt_rand() . microtime());     } while (preg_grep("/{$boundary}/", $body));      // add boundary each parameters     array_walk($body, function (&$part) use ($boundary) {         $part = "--{$boundary}\r\n{$part}";     });      // add final boundary     $body[] = "--{$boundary}--";     $body[] = "";      // set options     return @curl_setopt_array($ch, array(         curlopt_post       => true,         curlopt_postfields => implode("\r\n", $body),         curlopt_httpheader => array(             "expect: 100-continue",             "content-type: multipart/form-data; boundary={$boundary}", // change content-type         ),     )); } 

this retrieved user contributed notes section of php curlfile::__construct documentation

i used , worked:

$fields = array(     'json' => json_encode( array(         'method' => "create_video",         'params' => array(             'video' => array(                 'name' => $video->submission_by_name.' '.time(),                 'shortdescription' => $video->submission_question_1             ),             "token" => $this->config->item('brightcove_write_token'),             "encode_to" => "mp4",             "create_multiple_renditions" => "true"         ))     ) );  $files = array(     'file' => fcpath.'assets/uploads/submitted/'.$video->filename );  //open connection $ch = curl_init(); curl_setopt($ch,curlopt_url, $this->config->item('brightcove_write_endpoint')); $this->curl_custom_postfields($ch, $fields, $files); curl_setopt($ch, curlopt_returntransfer, true);  //execute post $result = json_decode(curl_exec($ch));