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run code in 300+ PHP versions simultaneously
<?php class A { private $test1 = 'hello'; protected $test2 = 'world'; protected $test3; public function toArray() { $this->test1 = null; $this->test3 = false; $array = get_object_vars($this); return array_filter($array, 'strlen'); } } $a = new A(); print_r($a->toArray());

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