<?php class Registry { public $data = []; public function __get($var) { return $this->data[$var] ?? null; } public function get($var, $default) { if (!array_key_exists($var, $this->data)) { return $default; } } } $reg = new Registry; var_dump($reg->empty); var_dump(strtoupper($reg->empty)); var_dump($reg->get('empty', 'empty')); var_dump(strtoupper($reg->get('empty', 'empty')));
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