PHP で Arduino を制御する - LED を点灯させよう ref: http://qiita.com/oasynnoum@github/items/91aed309bd9de8af8d0a

file0.txt

{
    "name": "phpmake/example-blink-led",
    "type": "project",
    "require": {
        "phpmake/firmata": "dev-master"
    }
}

file1.txt

$ composer install

file2.php

<?php
require dirname(__FILE__) . '/vendor/autoload.php';

/* initialize the device */
$device = new PHPMake\Firmata\Device('/dev/ttyACM0');
/* for Windows */
// $device = new PHPMake\Firmata\Device('COM3');

$pin = 13;

for ($i = 0; $i < 3; ++$i) {
  $device->digitalWrite($pin, PHPMake\Firmata::HIGH); // light
  sleep(1);
  $device->digitalWrite($pin, PHPMake\Firmata::LOW); // unlight
  sleep(1);
}

file3.txt

$ php blink-led.php