php5.4.php

php -S localhost:8124

<?php

$a = array(
'logger' => function () {echo 'loggin really serious stuff';}
);

echo $a['logger']() . "\n";


class Car
{
  protected $manufacturer = NULL;

  public function getSerialId()
  {
    return rand(0, 999);
  }

  public function allowsDriversOver()
  {
    return 18;
  }

  public function isA($manufacturer)
  {
    if ($this->manufacturer == $manufacturer)
    {
      return true;
    }
  }
}

class StandardCar extends Car
{
  
}

class MiniCar extends Car
{
  public function allowsDriversOver()
  {
    return 16;
  }
}

class BmwCar extends StandardCar
{
  use BmwManufactured;
}

class BmwMiniCar extends MiniCar
{
  use BmwManufactured;
}

trait BmwManufactured
{
  protected $manufacturer = 'bmw';

  public function getSerialId()
  {
    return parent::getSerialId() . "-bmw";
  }

  public function allowsDriversOver()
  {
    return 21;
  }
}

$bmwCar = new BmwCar();
$bmwMiniCar = new BmwMiniCar();
echo 'Macchina BMW: ' . $bmwCar->allowsDriversOver() . ", " . $bmwCar->getSerialId() . "\n";
echo 'Mini BMW: ' . $bmwMiniCar->allowsDriversOver() . ", " . $bmwMiniCar->getSerialId() . "\n";

$car = new car();
echo 'Macchina: ' . $car->allowsDriversOver() . ", " . $car->getSerialId() . "\n";
$miniCar = new Minicar();
echo 'Macchina mini: ' . $miniCar->allowsDriversOver() . ", " . $miniCar->getSerialId() . "\n";

if ($bmwCar->isA('bmw'))
{
  echo "Ho una BMW!\n";
}

class ClosureContainer
{
  protected $value = 13;

  public function getValue()
  {
    $a = function () {
      return $this->value;
    };

    return $a();
  }
}

$cc = new ClosureContainer();

echo $cc->getValue() . "\n";

echo "\n";