Online PHP editor | output for 4d6XG

@ 2023-06-01T09:47:30Z

<?php

class Foo {
    public string $bar = 'a';
    public ?string $baz = null;
    
    public function __construct(public readonly ?string $x = null) {
        
    }
}

$foo = new Foo();
$fooSerialized = 'O:3:"Foo":1:{s:3:"bar";s:1:"a";}a';
$fooUnserialized = unserialize($fooSerialized);

var_dump($fooUnserialized->bar); // works because exists in serialized string
var_dump($fooUnserialized->baz); // works because regular typed property, even if not existing in serialized string
var_dump($fooUnserialized->x); // Doesn't work

Output for 8.3.5 - 8.3.27, 8.4.1 - 8.4.14: Warning: unserialize(): Extra data starting at offset 32 of 33 bytes in /in/4d6XG on line 14 string(1) "a" NULL Fatal error: Uncaught Error: Typed property Foo::$x must not be accessed before initialization in /in/4d6XG:18 Stack trace: #0 {main} thrown in /in/4d6XG on line 18
Process exited with code 255.
Output for 8.1.30 - 8.1.33, 8.2.6 - 8.2.29: string(1) "a" NULL Fatal error: Uncaught Error: Typed property Foo::$x must not be accessed before initialization in /in/4d6XG:18 Stack trace: #0 {main} thrown in /in/4d6XG on line 18
Process exited with code 255.

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