Online PHP editor | rfc for SKWdW

@ 2015-07-21T16:18:02Z

<?php

class Animal {
	public function eat() { echo 'Yummy!'; }
}

class Plant {
	public $size = 0;
	public function grow() { echo 'I\'m level '.++$this->size; }
}

if (rand(0, 1) == 0) $base = 'Animal'; else $base = 'Plant';
class_alias($base, "LifeformBase");
class Lifeform extends LifeformBase { }

var_dump(new Lifeform);

// similar for ReflectionClass, you just need to fetch the name

// inheritance by anonymous class; also requires an object representing the anonymous class, like Closure is for anonymous functions.

function get_base_animal_class() {
	return new class extends Animal {
		public $color;
		public function hiss() { echo 'Hiss!'; }
	};
}
class_alias(get_class(get_base_animal_class()), "AnonBase");
$tiger_class = new class extends AnonBase {
	public $color = 'orange';
};
var_dump($tiger_class->hiss(), $tiger_class->color);

Output for git.master_jit, rfc.property-hooks: object(Lifeform)#1 (1) { ["size"]=> int(0) } Hiss!NULL string(6) "orange"
Output for git.master: object(Lifeform)#1 (0) { } Hiss!NULL string(6) "orange"

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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