PHP实现保质期计算器

1.php实现保质期计算， 保质期日期可选，天 、月、年

 2. laravel示例

/*** 保质期计算器* @return void*/public function expirationDateCal(){$produce_date = $this->request('produce_date');             // 生产日期$warranty_date = $this->request('warranty_date');           // 保质期$type = $this->request('type');                             // 类型 day month yearswitch ($type) {case "day":$date = date('Y-m-d', strtotime("+{$warranty_date} day", strtotime($produce_date)));$exp_date = date('Y-m-d', strtotime("-1 day", strtotime($date)));break;case "month":$date = date('Y-m-d', strtotime("+{$warranty_date} month", strtotime($produce_date)));$exp_date = date('Y-m-d', strtotime("-1 day", strtotime($date)));break;case "year":$date = date('Y-m-d', strtotime("+{$warranty_date} year", strtotime($produce_date)));$exp_date = date('Y-m-d', strtotime("-1 day", strtotime($date)));break;default:$exp_date = 0;}$exp_status = time() >= strtotime($exp_date) ? '已过期' : '未过期';return $this->jsonSuc(['result' => ['exp_date' => $exp_date, 'exp_status' => $exp_status] ?? []]);}