<?php
// 继承拥有比组合更少的代码量
class car
{
public function addoil()
{
echo "Add oil\r\n";
}
}
class bmw extends car
{
}
class benz
{
public $car;
public function __construct()
{
$this->car = new car();
}
public function addoil()
{
$this->car->addoil();
}
}
$bmw = new bmw();
$bmw->addoil();
echo '<br>';
$benz = new benz();
$benz->addoil();
echo 'VROOOOOOOOMMMMM';
}
}
class chanceOfRain
{
public $chance;
function __construct()
{
$this->chance = rand(0, 10);
// echo $this->chance;
}
function checkForRain()
{
if ($this->chance > 5) {
return true;
} else {
return false;
}
}
}
$myCar = new car();
$myCar->accelerate();
$myCar->letsOpenTheTop();
$myNewCar = new bmw();
$myNewCar->accelerate();
// $myNewCar->letsOpenTheTop();
$rain = new chanceOfRain();
if ($rain) {
echo "<p>It's raining!</p>";
$myCar->letsCloseTheTop();
}