<?php class Base { private $id; public function __construct($id) { $this->id = $id; } } class Derived extends Base { protected $id; public function __construct($id) { parent::__construct($id + 20); $this->id = $id; } } $a = new Derived(44); $s = serialize($a); $u = unserialize($s); print_r($u);
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Value for `_results` contains invalid data `array`