'SELECT MI.url, MI.tamanno, M.manual, M.titulo, P.producto, MA.marca, AS id_idioma, I.idioma, MI.id_manual FROM manual_idioma MI, manuales M, productos P, marcas MA, idiomas I WHERE MI.id_manual = AND M.id_producto = P.id_producto AND P.id_marca = AND MI.id_idioma = AND P.id_marca = '30' ORDER BY P.producto, M.manual LIMIT -10, 10'
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-10, 10' at line 10