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<?php class A { public $params = array('extract-core' => 'no'); public function __invoke() { $this->_extractCore = !(strtolower($this->params['extract-core']) === 'no');var_dump(!(strtolower($this->params['extract-core']) === "no"));var_dump($this->params['extract-core']); } } $A = new A(); $A->__invoke();

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