Online PHP editor | rfc for ha14g

@ 2015-09-11T13:32:01Z

<?php

// note that copy() is a proper alternative to __clone()

interface Any
{
    function getHash();
    function equals($other);
}

class Mutable implements Any
{
    protected $baz;
    
    function __construct(string $baz){
        $this->setBaz($baz);
    }
    
    function setBaz(string $baz){
        $this->baz = $baz;
    }
    
    function getBaz(){
        return $this->baz;
    }
    
    function getHash(){
        return Immutable::CLASS . "|" . spl_object_hash($this);
    }
    
    function equals($other){
        return $this->getHash() === $other->getHash();
    }
    
    function copy(){
        return new static($this->baz);
    }
}

class Immutable implements Any
{
    protected $baz;
    
    function __construct(string $baz){
        $this->baz = $baz;
    }
    
    function getHash(){
        return Mutable::CLASS . "|" . $this->baz;
    }
    
    function equals($other){
        return $this->getHash() === $other->getHash();
    }
    
    function copy(){
        return $this;
    }
}

var_dump((new Immutable("baz"))->equals(new Immutable("baz"))); // true
var_dump((new Immutable("bar"))->equals(new Immutable("bar"))); // true

var_dump((new Mutable("baz"))->equals(new Mutable("baz"))); // false
var_dump((new Mutable("bar"))->equals(new Mutable("bar"))); // false

Output for git.master, git.master_jit, rfc.property-hooks: bool(true) bool(true) bool(false) bool(false)

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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