
// 连接数据库require './includes/connect.class.php';$conn = Connect::getInstance();// 获取数据$res = $conn->fetchAll("SELECT * FROM `b_sale` UNION ALL SELECT * FROM `b_lend` ");if (isset($_GET['action']) && $_GET['action'] == 'sale') {// 按销量排序array_multisort(array_column($res, 'num'), SORT_ASC, $res);} elseif (isset($_GET['action']) && $_GET['action'] == 'price') {// 按价格排序array_multisort(array_column($res, 'price'), SORT_ASC, $res);}

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