function fuelConsumption($distance)
{
$result = $this->fuel * $distance / 100;
return $result;
}
}
class Audi extends Car
{
}
$distance = 1000;
//
$car1 = new Car();
$car1->speed = 50;
$car1->fuel = 20;
echo "Время в пути " . $car1->rtipTime($distance) . "<br>";
echo "Расход топлива " . $car1->fuelConsumption($distance) . "<br>";
//
$car2 = new Car();
$car2->speed = 75;
$car2->fuel = 30;
echo "Время в пути " . $car2->rtipTime($distance) . "<br>";
echo "Расход топлива " . $car1->fuelConsumption($distance) . "<br>";
//
$bic = new Bicycle();
$bic->speed = 50;
echo "Время в пути " . $bic->rtipTime($distance) . "<br>";
echo "Расход калорий " . $bic->caloriesBurned($distance) . "<br>";
?>
</body>
</html>
echo paint("bedroom", null);
echo paint("bedroom");
echo paint("blue");
//You have to pay attention to the order of the paramters you're passing!
//A simple inheritance example, where the parent class' method "honk" is accessed using two different syntaxes.
class Vehicle
{
public function honk()
{
return "HONK HONK!";
}
}
class Bicycle extends Vehicle
{
}
$bicycle = new Bicycle();
echo $bicycle->honk() . "<br>";
echo Bicycle::honk() . "<br>";
//The :: is a "scope resolution operator". However, according to strict standards, one should not call a non-static method statically.
//Accessing a parent class constant const (notice no $ before the constant's name) without creating an object
class Hi
{
const hi = "hello";
}
class HelloWorld extends Hi
{
}
echo HelloWorld::hi;
//The :: is a "scope resolution operator"
echo "<br>";
echo "<br>";
<html>
<head>
<title>Sobreposição!</title>
</head>
<body>
<p>
<?php
class Vehicle
{
public function honk()
{
return "HONK HONK!";
}
}
// Adicione seu código abaixo!
class Bicycle extends Vehicle
{
public function honk()
{
return "Beep beep!";
}
}
$bicycle = new Bicycle();
echo $bicycle->honk();
?>
</p>
</body>
</html>
class Car extends Vehicle{
public $gas;
function __construct()
{
parent::__construct("car",4);
$this->gas = 100;
}
function drive(){
parent::drive();
$this->gas-= 5;
echo "Now I have $this->gas percent of gas left.<br>";}
}
$bike = new Bicycle("bell");
echo $bike->drive("bell"); //prints 'Riding a bike with 2 wheels'
echo '<br>';
$car = new Car();
echo $car->drive();//prints 'Driving a car with 4 wheels'
?>
</p>
<?php
/*
*
$_SESSION
$_POST
$_GET
}
?>
<h2>Inheritance</h2>
<?php
$square = new Square();
if (property_exists($square, "hasSides")) {
echo "I have sides";
}
?>
<h2>Overriding Parent Methods</h2>
<?php
$vehicle = new Vehicle();
echo $vehicle->honk() . "<br/>";
$bicycle = new Bicycle();
echo $bicycle->honk() . "<br/>";
echo $bicycle->drive() . "<br/>";
?>
<h2>Using <code>const</code></h2>
<?php
// :: => scope resolution operator
if (Immortal::alive) {
echo "I live forever!";
}
?>
<h2><code>static</code> Keyword</h2>
<?php
echo Person::greet() . "<br/>";
echo Person::$shout . "<br/>";
<?php
class Model
{
protected static function validateArgs($args)
{
throw new Exception("You need to override this in a subclass!");
}
public static function find($args)
{
static::validateArgs($args);
$class = get_called_class();
// now you can do a database query, such as:
// SELECT * FROM $class WHERE ...
}
}
class Bicycle extends Model
{
protected static function validateArgs($args)
{
return true;
}
}
Bicycle::find(['owner' => 'peewee']);
