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@ 2023-11-15T04:18:47Z

<?php

class F {
    private string $bar;
    public function __construct(private string $foo, string $bar){
        $this->bar = $bar;
    }
    
    public function __sleep(): array {
        return array_keys(get_object_vars($this));
    }
    public function getFoo():string {
        return $this->foo;
    }
    public function getBar():string {
        return $this->bar;
    }
}
$g = new F('this is a private variable', 'so is this');

class G extends F {}

$s = serialize($g);
var_export($s);
$n = unserialize($s);
echo \PHP_EOL;
echo $n->getFoo();
echo \PHP_EOL;
echo $n->getBar();

$h = new G('This is an extension', 'of the other one');
$s = serialize($h);
echo \PHP_EOL;
var_export($s);
$n = unserialize($s);
echo \PHP_EOL;
echo $n->getFoo();
echo \PHP_EOL;
echo $n->getBar();

Output for git.master, git.master_jit, rfc.property-hooks: 'O:1:"F":2:{s:6:"' . "\0" . 'F' . "\0" . 'bar";s:10:"so is this";s:6:"' . "\0" . 'F' . "\0" . 'foo";s:26:"this is a private variable";}' this is a private variable so is this Warning: serialize(): "bar" returned as member variable from __sleep() but does not exist in /in/d6WN9 on line 32 Warning: serialize(): "foo" returned as member variable from __sleep() but does not exist in /in/d6WN9 on line 32 'O:1:"G":0:{}' Fatal error: Uncaught Error: Typed property F::$foo must not be accessed before initialization in /in/d6WN9:13 Stack trace: #0 /in/d6WN9(37): F->getFoo() #1 {main} thrown in /in/d6WN9 on line 13
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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