Question about PHP verification and database

public function updateComplement(){

        $ids = $_GET['id'];
        $names = $_GET['name'];
        $valores = $_GET['valor'];
        $quantities = $_GET['quantity'];
        $idProdutos = $_GET['idProduto'];

        
       
        $carrinho = [];

        for ($i = 0; $i < count($ids); $i++) {
            $id = $ids[$i];
            $name = $names[$i];
            $valor = $valores[$i];
            $quantity = $quantities[$i];
            $idProduto = $idProdutos[$i];

            $checkC = Complemento::select()->where('id', $ids[$i])->first();
            $carrinho = Carrinho::select()->where('product', $idProduto)->where('id_user', $this->loggedUser->id)->first();
            $checkCart = Ccarrinho::select()->where('id_carrinho', $carrinho['id'])->first();


            foreach ($carrinho as $car) {
              
            }

                if($checkC){

                    Ccarrinho::insert([
                        'id_user' => $this->loggedUser->id,
                        'name' => $name,
                        'subtotal' => $valor,
                        'quantity' => $quantity,
                        'id_c' => $id,
                        'id_carrinho' => $usarIdAlternativo ? $checkCcarinho['id'] : $car['id']
                    ]);

                }
        }               
    }

I'm sending the additional data of a product through a fetch, receive them and add with the product that is in the user's shopping cart [CARRINHO], but I can not find a logic to create complement for each product in the cart.

up to 3 additional for each product in the cart, the add-ons are saved in the CCARRINHO table with the cart ID.

source https://stackoverflow.com/questions/76894985/question-about-php-verification-and-database