Online PHP editor | output for DgXJl

@ 2022-04-25T16:47:22Z

<?php

class Foo {
    private $untyped = 'old';
    private string $typed = 'old';
    
    public function clear() {
        unset($this->untyped);
        unset($this->typed);
    }
}

$foo = new Foo;
var_dump($foo);
$foo->clear();
var_dump($foo);
try {
    $foo->untyped = 'new';
} catch (Error $e) {
    echo "\n", $e, "\n";
}
try {
    $foo->typed = 'new';
} catch (Error $e) {
    echo "\n", $e, "\n";
}
var_dump($foo);

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7: object(Foo)#1 (2) { ["untyped":"Foo":private]=> string(3) "old" ["typed":"Foo":private]=> string(3) "old" } object(Foo)#1 (0) { ["typed":"Foo":private]=> uninitialized(string) } Error: Cannot access private property Foo::$untyped in /in/DgXJl:18 Stack trace: #0 {main} Error: Cannot access private property Foo::$typed in /in/DgXJl:23 Stack trace: #0 {main} object(Foo)#1 (0) { ["typed":"Foo":private]=> uninitialized(string) }

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