Convert JSON cookie to Netscape cookie

function bake_cookies($dest, $src){
    //covert JSON cookie file (src) to Netscape cookie file (dest)
    $cookie_json = json_decode(preg_replace('/^#.*\n/', '', file_get_contents($src))); //get cookie json contents, strip #-style comments, decode

    $netscape_cookie = ''; //build netscape cookie contents
    foreach($cookie_json as $cookie){
        $secure_flag = ($cookie->secure) ? 'TRUE' : 'FALSE';
        $expiration = 0;
        if(isSet($cookie->expirationDate)){
            $expiration = round($cookie->expirationDate);
        }
        $netscape_cookie .= "{$cookie->domain}\tFALSE\t{$cookie->path}\t{$secure_flag}\t{$expiration}\t{$cookie->name}\t{$cookie->value}\n";
    }

    file_put_contents($dest, $netscape_cookie); //create netscape cookie using accumulated cookies
}