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

erikaheidi

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

erikaheidi

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)

erikaheidi

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

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

box_width = letter_size*textlen*1.1;
box_height = letter_size*1.2;

erikaheidi

total	Language
2477	JavaScript
1399	Python
1051	NULL
715	TypeScript
631	Java

erikaheidi

<?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";

erikaheidi

Arduino Tutorials

• Getting Started with Arduino: LED blinking
• How to use PHP to control an Arduino via Serial

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

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

erikaheidi

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

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

box_width = letter_size*textlen*0.8;
box_height = letter_size + (2*padding);
box_thickness = 20;

erikaheidi

<?php

require 'vendor/autoload.php';

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

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

erikaheidi

<?php

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

$serial = new PhpSerial();

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