PortMapping

A port a service listens on inside its container, and the host port it is published on, if any.

public function __construct(int $container, ?int $host = null, string $protocol = 'tcp'):

Parameters of __construct()
Name	Type	Description
$container	`int`	the port inside the container
$host	`(int \| null)`	the port on the host, or null when the service is reachable only inside the stack
$protocol	`string`	`tcp` or `udp`

public function toCompose(): string

The mapping as a compose `ports:` entry — `host:container`, with `/udp` when it is not tcp.

PortMapping::__construct()