Online PHP editor | rfc for u377m

@ 2016-02-20T18:46:36Z

<?php

interface Visitor
{
    public function visitCar(Car $car);
    public function visitGolf(Golf $golf);
    public function visitPorsche(Porsche $porsche);
}

interface Vehicle
{
    public function accept(Visitor $v);
}

class Car implements Vehicle
{
    public function accept(Visitor $v)
    {
        $v->visitCar($this);
    }
}

class Golf extends Car
{
    public function accept(Visitor $v)
    {
        $v->visitGolf($this);
    }
}

class Porsche extends Car
{
    public function accept(Visitor $v)
    {
        $v->visitPorsche($this);
    }
}

class DriveVisitor implements Visitor
{
    public function visitCar(Car $car)
    {
        print 'Auto fährt' . PHP_EOL;
    }
    
    public function visitGolf(Golf $golf)
    {
        print 'Golf fährt schneller' . PHP_EOL;
    }
    
    public function visitPorsche(Porsche $porsche)
    {
        print 'Porsche fährt am schnellsten' . PHP_EOL;
    }
}

$c = new Car();
$g = new Golf();
$p = new Porsche();

$dv = new DriveVisitor();

$c->accept($dv);
$g->accept($dv);
$p->accept($dv);

Output for git.master, git.master_jit, rfc.property-hooks: Auto fährt Golf fährt schneller Porsche fährt am schnellsten

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2020-03-21 RFC: Is_Literal - declined
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2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
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2016-04-19 Lexical scope support for anonymous classes - suspended
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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
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2015-02-14 Union Types - declined
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