使用PHP在JSON中循环嵌套数组

I am trying to loop through a nested array which is in my JSONObject. My aim is to echo div's based on the data in the JSONObject currently I am using this to get the contents of the JSON

$restaurant = json_decode(file_get_contents("restaurant.json"));

Here is the old foreach loop before I nested the array

<?php foreach($restaurant->menu->starter as $starter){
               echo '<h3>'.$starter->name.'</h3><br><p>'.$starter->price.'</p><br>'; 

           } ?>

And here is my new JSONObject

{
  "name": "Takeaway Kings",
  "menu": [
    {
      "starter": [
        {
          "name": "Samosas",
          "price": 3.5
        },
        {
          "name": "Chaat",
          "price": 1.99
        }
      ]
    },
    {
      "dessert": [
        {
          "name": "Kulfi",
          "price": 2.5
        },
        {
          "name": "Kheer",
          "price": 2.99
        }
      ]
    },
    {
      "main": [
        {
          "name": "Lamb Biryani",
          "price": 4.5
        },
        {
          "name": "Chicken Tikka Masala",
          "price": 5.99
        }
      ]
    }
  ]
}

I am not sure how to for example write this loop just for the starters data to display

$arr = json_decode($json); // $json is your JSON.
foreach($arr->menu[0]->starter as $starter){
  echo '<h3>'.$starter->name.'</h3><br><p>'.$starter->price.'</p><br>';
}