<?php include_once "DAOs/conexao.php"; include_once "DAOs/categoriaDAO.php"; include_once "DAOs/subcategoriaDAO.php"; $cat = new categoriaDAO(); $sub = new subcategoriaDAO(); $vet = $cat->ListarCategorias(); $num = count($vet); for ($i = 0; $i < $num; $i++) { echo $vet[$i]['nome'] . '<br/>'; $vet1 = $sub->ListarSubcategorias($vet[$i]['id_categoria']); $num1 = count($vet1); } // $vet1=$sub->ListarSubcategorias(1); // print_r($vet1);