# toSetCookieHeader

Learn how to render the cookie as a Set-Cookie header value.

This method renders the cookie as the value of a `Set-Cookie` response header.

Use it when your framework lets you set raw header values, so you can write the cookie without mapping each attribute yourself.

## Signature

This method has the following signature:

```php
public function toSetCookieHeader(?int $now = null): string
```

This method returns the `Set-Cookie` header value that represents the cookie.

## Example

Here is a basic example of how to use this method:

```php
<?php
use Croct\Plug\CookieStorage;

$cookies = CookieStorage::fromGlobals()->getResponseCookies();

foreach ($cookies as $cookie) {
    header('Set-Cookie: ' . $cookie->toSetCookieHeader(), false);
}
```

## Parameters

The following list describes the supported parameters:

- `now`: `integer` (optional) (default: null)

  The current time as a Unix timestamp in seconds, used to compute the `Max-Age` attribute. The default is `null`, which uses the current time.