摘要: public function backFunction(){ $backs = function ($v){ return (is_numeric($v)) ? $v * 2 : 0; }; $rt = $backs(10); dump($rt);// 20} 阅读全文
posted @ 2019-11-23 15:14 jokerer 阅读(1980) 评论(0) 推荐(0)