The PHP ftp_get() function downloads a file from the FTP server and saves it into a local file.

<?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);

// open files
$local_file = 'local.txt';
$server_file = 'server.txt';

// download file
if (ftp_get($ftp_conn, $local_file, $server_file, FTP_ASCII)) {
    echo 'File successful written';
}
else {
    echo 'Download failed';
}

// close connection
ftp_close($ftp_conn);
?>

// downloads a file from the FTP server and saves it into an open local file

ftp_get(ftp_conn, local_file, server_file, mode, startpos)