Online PHP editor | output for fNTRa

<?php class Foo { protected string $property; public function __construct(string $property) { $this->property = $property; } public function getProperty(): string { return $this->property; } } $foo = new Foo("foo"); echo "Default value:\n"; var_dump($foo->getProperty()); // ------------------------- Method 1 ------------------------- echo "\nInvoking the __constructor() method again:\n"; $foo->__construct("bar"); var_dump($foo->getProperty()); // ------------------------- Method 2 ------------------------- // https://ocramius.github.io/blog/accessing-private-php-class-members-without-reflection/ echo "\nClosure binding:\n"; Closure::bind( function (): void { $this->property = "baz"; }, $foo, $foo )->__invoke(); var_dump($foo->getProperty()); // ------------------------- Method 3 ------------------------- echo "\nAbusing anonymous classes:\n"; $fooAbuser = new class("") extends Foo { public function abuse(Foo $foo): void { $foo->property = "boom"; } }; $fooAbuser->abuse($foo); var_dump($foo->getProperty());