PHPでFTP PUTをする

// ==============================================
function ftp_upload (
                     $ftp_host
                    ,$ftp_user
                    ,$ftp_pass
                    ,$file_from
                    ,$file_to
                ){

    $res_ftp = ftp_connect($ftp_host);
    if ($res_ftp === False) {
        return False;
    }

    $bol_flg = ftp_login($res_ftp, $ftp_user, $ftp_pass);
    if ($bol_flg === False) {
        return False;
    }
    unset($bol_flg);

    $bol_flg = ftp_put($res_ftp, $file_to, $file_from, FTP_BINARY);
    if ($bol_flg === False) {
        return False;
    }
    unset($bol_flg);

    ftp_close($res_ftp);
    unset($res_ftp);

    return True;
}
// ==============================================