PHP ftp_fget() Function

<?php
// connect and login to FTP server
$ftp_server = "ftp.example.com";
$ftp_conn = ftp_connect($ftp_server) or die("Could not connect to $ftp_server");
$login = ftp_login($ftp_conn, $ftp_username, $ftp_userpass);

$server_file = "somefile.txt";

// open local file to write to
$local_file = "local.txt";
$fp = fopen($local_file,"w");

// download server file and save it to open local file
if (ftp_fget($ftp_conn, $fp, $server_file, FTP_ASCII, 0))
  {
  echo "Successfully written to $local_file.";
  }
else
  {
  echo "Error downloading $server_file.";
  }

// close connection and file handler
ftp_close($ftp_conn);
fclose($fp);
?>