subimit form esterno

[mattealex]

Grazie!
Frugando nel manuale ho trovato quello che cercavo qui:stream_context_create.
Riporto la funzione chi ne avrà bisogno in futuro:

function do_post_request($url, $postdata, $files = null)
{
    $data = "";
    $boundary = "---------------------".substr(md5(rand(0,32000)), 0, 10);
      
    //Collect Postdata
    foreach($postdata as $key => $val)
    {
        $data .= "--$boundary\n";
        $data .= "Content-Disposition: form-data; name=\"".$key."\"\n\n".$val."\n";
    }
    
    $data .= "--$boundary\n";
   
    //Collect Filedata
    foreach($files as $key => $file)
    {
        $fileContents = file_get_contents($file['tmp_name']);
       
        $data .= "Content-Disposition: form-data; name=\"{$key}\"; filename=\"{$file['name']}\"\n";
        $data .= "Content-Type: image/jpeg\n";
        $data .= "Content-Transfer-Encoding: binary\n\n";
        $data .= $fileContents."\n";
        $data .= "--$boundary--\n";
    }
 
    $params = array('http' => array(
           'method' => 'POST',
           'header' => 'Content-Type: multipart/form-data; boundary='.$boundary,
           'content' => $data
        ));

   $ctx = stream_context_create($params);
   $fp = fopen($url, 'rb', false, $ctx);
  
   if (!$fp) {
      throw new Exception("Problem with $url, $php_errormsg");
   }
 
   $response = @stream_get_contents($fp);
   if ($response === false) {
      throw new Exception("Problem reading data from $url, $php_errormsg");
   }
   return $response;
}