Online PHP editor | output for L7GIR

<?php final class Content { protected array $data = array('sequence'=>1); public function &__get(string $property) : mixed { if(isset($this->data[$property]) === false): $this->data[$property] = null; endif; return $this->data[$property]; } public function __set(string $name,mixed $value) : void { $this->data[$name] = $value; } } final class MyClass { private object $content; public function __construct(){ $this->content = new Content(); } public function generateSequence() : int { $result = $this->content->sequence * 2 + 1; $this->content->sequence += 1; return $result; } } $myclass = new MyClass(); print $myclass->generateSequence();