php-gpio の API の使用例です。

php-gpio-example.php

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

use PhpGpio\Gpio;

$pin = 25;
print "Setting up pin $pin" . PHP_EOL;
$gpio = new GPIO();
$gpio->setup($pin, "out");


for ($i = 0; $i < 20; $i++) {
    print "Turning on pin $pin" . PHP_EOL;
    $gpio->output($pin, 1);
    print "Sleeping" . PHP_EOL;
    sleep(1);

    print "Turning off pin $pin" . PHP_EOL;
    $gpio->output($pin, 0);
    print "Sleeping" . PHP_EOL;
    sleep(1);
}

print "Unexporting all pins" . PHP_EOL;
$gpio->unexportAll();