Erro com bind_param() com conexão PDO mysql

Ola amigos, se alguém puder me ajudar no erro no script eu agradeço muito, o erro é o seguinte:

Fatal error: Call to undefined method PDOStatement::bind_param() in

o código é esse:

setlocale(LC_MONETARY,"en_US");
if(isset($_POST["id"])) {
	foreach($_POST as $key => $value){
 $product[$key] = filter_var($value, FILTER_SANITIZE_STRING);
	}

	$statement = app('db')->prepare("SELECT as_produtos.nome, as_produtos.preco FROM as_produtos WHERE id=? LIMIT 1");
	$statement->bind_param('s', $product['id']);
	$statement->execute();
	$statement->bind_result($product_name, $product_price);

	while($statement->fetch()){
 $product["product_name"] = $product_name;
 $product["product_price"] = $product_price;
 if(isset($_SESSION["products"])){
 if(isset($_SESSION["products"][$product['id']])) {
 $_SESSION["products"][$product['id']]["product_qty"] = $_SESSION["products"][$product['id']]["product_qty"] + $_POST["product_qty"];
 } else {
 $_SESSION["products"][$product['id']] = $product;
 }
 } else {
 $_SESSION["products"][$product['id']] = $product;
 }
	}
 $total_product = count($_SESSION["products"]);
	die(json_encode(array('products'=>$total_product)));
}

if(isset($_GET["remove_code"]) && isset($_SESSION["products"])) {
	$product_code = filter_var($_GET["remove_code"], FILTER_SANITIZE_STRING);
	if(isset($_SESSION["products"][$product_code]))	{
 unset($_SESSION["products"][$product_code]);
	}
 $total_product = count($_SESSION["products"]);
	die(json_encode(array('products'=>$total_product)));
}

if(isset($_GET["update_quantity"]) && isset($_SESSION["products"])) {
	if(isset($_GET["quantity"]) && $_GET["quantity"]>0) {
 $_SESSION["products"][$_GET["update_quantity"]]["product_qty"] = $_GET["quantity"];
	}
	$total_product = count($_SESSION["products"]);
	die(json_encode(array('products'=>$total_product)));
}