Online PHP editor | rfc for nJT9R

@ 2019-12-14T16:27:10Z

<?php

abstract class Animal
{
    protected $name;
    
    public function __construct(string $name) 
    {
        $this->name = $name;
    }

    abstract public function speak();
}

class Dog extends Animal {
    public function speak() 
    { 
        echo $this->name . " barks";   
    }
}

class Cat extends Animal {
    public function speak() 
    { 
        echo $this->name . " meows";   
    }
}

interface AnimalShelter
{
    public static function adopt(string $name): Animal;
}

class CatShelter implements AnimalShelter
{
    public static function adopt(string $name): Cat
    {
        return new Cat($name);
    }
}

class DogShelter implements AnimalShelter
{
    public static function adopt(string $name): Dog
    {
        return new Dog($name);
    }
}

$kitty = CatShelter::adopt("Ricky");
$kitty->speak();
echo "\n";

$doggy = DogShelter::adopt("Mavrick");
$doggy->speak();

Output for git.master, git.master_jit, rfc.property-hooks: Ricky meows Mavrick barks

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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