Help with Looping PHP Forms

I'm building a pizza shop for a school assignment and I am stuck with trying to get the information from an array containing the toppings

Here's the code from the form. (this form is looped for several pizzas)

<li><input type="checkbox" name="toppings1[]" value="pepperoni"> Pepperoni</li>

PHP:

and here is what I started with proccessing the order but cant get the toppings to come out of this array properly.

$toppings1 = $_POST['toppings1'];
///This loop will output the topping selected for all the pizzas.
foreach($toppings1 as $key => $value){
echo "$toppings1 $key $value <br>";
}

//Some reason this code wont work to call a topping from the array
echo $toppings1[0]<br>";

PHP:

 

Small fix:

echo $toppings1[0] . "<br />";

PHP:

Other then that it should work fine.