Blog : how to upload file using curl with php [closed]

how to upload file using curl with php [closed]

I want to know how to upload file using cURL or anything else in PHP. I have searched in google many times but no results.
I have this code to receive the file and upload it
code :
echo"".$_FILES['userfile']."";
$uploaddir = './';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
if ( isset($_FILES["userfile"]) ) {
  echo '

Uploaded

';
  if (move_uploaded_file
($_FILES["userfile"]["tmp_name"], $uploadfile))
echo $uploadfile;
  else echo '

Failed

';
}
I want the code to send the file to receiver file.
Use:
$file_name_with_full_path = realpath('./sample.jpeg');
$post = array('extra_info' => '123456','file_contents'=>'@'.$file_name_with_full_path);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$target_url);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$result=curl_exec ($ch);
curl_close ($ch);
You can also refer:
http://blog.derakkilgo.com/2009/06/07/send-a-file-via-post-with-curl-and-php/