<?php class Regular { public $test = 'value'; } class Magic { private $values = ['test' => 'value']; public function __get($key) { if (isset($this->values[$key])) { return $this->values[$key]; } } public function __isset($key) { return isset($this->values[$key]); } } var_dump(empty($regular->test)); // outputs bool(false) var_dump(empty($magic->test)); // outputs bool(true)
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