有人会知道如何在我的PHP代码中实现这一点,这里我保留PHP文件:Meta.php * Representa el la estructura de las metas><?php * Obtiene todas las metas de la base de datos
if ($_SERVER['REQUEST_METHOD
; SELECT COUNT(DISTINCT metas.name) AS cnt FROM documents, metas, documents_has_metas WHERE documents.id= documents_has_metas.documents_id AND metas.id_meta = documents_has_metas.metas_id AND documents.id
03-14 15:34:00 |vehicles_metas`id` from `vehicles` inner join `vehicle_metas` on `vehicle_metas`.`vehicle_id` = `vehicles`.`id` where (`vehicle_metas`.`meta_key` = 'type' and `ve