kyle-jennings

// downloads a file from a URL and saves it to the /tmp folder in the OS
$tmp_file = download_url( $url );

// the file info
$file = array(
  'name'     => $filename_with_extension,
  'type'     => 'image/png',
  'tmp_name' => $tmp_file, //src file
  'error'    => 0,
  'size'     => filesize( $tmp_file ),