关于一次上传多个图片的插件有没有？

<?php 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; } //set data (in this example from post) //sample data $postdata = array(     'name' => $_POST['name'],     'age' => $_POST['age'],     'sex' => $_POST['sex'] ); //sample image $files['image'] = $_FILES['image']; do_post_request("http://example.com", $postdata, $files); ?>