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@ 2016-01-13T19:39:53Z

<?php
class Item
{
    private static $cost = 100;
    
    public function getTotal($discount = 7) {
       return self::cost * $discount/(100+$discount);
    }
}

class Hydrator
{
    public function getPrivate($obj, $attribute) {
        $getter = function() use ($attribute) {return $self::$attribute;};
        return \Closure::bind($getter, $obj, get_class($obj));
    }
    
    public function setPrivate($obj, $attribute) {
        $setter = function($value) use ($attribute) {$self::$attribute = $value;};
        return \Closure::bind($setter, $obj, get_class($obj));
    }
}

$obj = new Item();

$hydrated = new Hydrator();
$getFoo = $hydrated->getPrivate($obj, 'cost');
$setFoo = $hydrated->setPrivate($obj, 'cost');

echo $obj->getTotal() .PHP_EOL;
$setFoo(1);
echo $obj->getTotal() .PHP_EOL;

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Undefined constant Item::cost in /in/BZ8Ai:7 Stack trace: #0 /in/BZ8Ai(30): Item->getTotal() #1 {main} thrown in /in/BZ8Ai on line 7
Process exited with code 255.

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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