Online PHP editor | output for RgV7B

<?php class A { private ?string $b = null; public static function newInstance($args){ return new self($args); } public function __construct($b = 'default') { $this->b = $b; } public function test() { echo("Test:" . $this->b . "\n"); } } $a = new A('test'); $a->test(); var_dump(class_exists('\\A')); $b = new ReflectionClass('A'); $c = $b->newInstance(); $c->test(); var_dump(class_exists('\\A'));