Erika Heidi erikaheidi

Example Apko build via pure Docker

docker run -iv --rm -v ${PWD}:/home/nonroot distroless.dev/apko build /home/nonroot/minicli-php81.yaml minicli:php81 /home/nonroot/minicli-php81.tar

Novidades do PHP 8

Union Types (|)
- public function foo(Foo|Bar $input): int|float;
JIT
- TODO: comparar performance PHP 7 x PHP 8 com processamento de imagens
The nullsafe operator (?)
- $dateAsString = $booking->getStartDate()?->asDateTimeString();
Named arguments
function foo(string $a, string $b, ?string $c = null, ?string $d = null)

This is an example of PHP code to send commands via serial, as shown in the talk:

<?php
require __DIR__ . '/vendor/autoload.php';

	contents:
	repositories:
	- https://dl-cdn.alpinelinux.org/alpine/edge/main
	- https://dl-cdn.alpinelinux.org/alpine/edge/community
	packages:
	- alpine-baselayout
	- php81
	- php81-common
	- php81-curl

	font = "DejaVu Sans:style=Bold";
	letter_size = 40;
	height = 8;

	string = "DEV";
	textlen = len(string);

	box_width = letter_sizetextlen1.1;
	box_height = letter_size*1.2;

	<?php
	####################################
	# Dynamic Inventory Build Script
	# usage: php doin.php > inventory
	####################################

	$DO_API_TOKEN = 'YOUR_DIGITALOCEAN_API_TOKEN';
	$GROUP_NAME = 'servers';

	$endpoint = "https://api.digitalocean.com/v2/droplets";

	font = "Ubuntu Mono";
	letter_size = 60;
	padding = 20;

	string = "@erikaheidi";
	textlen = len(string);

	box_width = letter_sizetextlen0.8;
	box_height = letter_size + (2*padding);
	box_thickness = 20;

	<?php

	require 'vendor/autoload.php';

	use PiPHP\GPIO\GPIO;
	use PiPHP\GPIO\Pin\PinInterface;

	$gpio = new GPIO();
	$pin = $gpio->getOutputPin(19);

	<?php

	require __DIR__ . '/vendor/autoload.php';

	$serial = new PhpSerial();

	$serial->deviceSet("/dev/ttyUSB0");
	$serial->confBaudRate(19200);
	$serial->confParity("none");
	$serial->confCharacterLength(8);