JSONPath Query to get Node-names?

Question

Consider the following piece of JSONPath:

{
   "result":[
      {
         "type":"Residence",
         "street":"Piazza di Spagna",
         "city":"-4:0"
      },
      {
         "type":"Residence",
         "street":"test",
         "city":"-4:1"
      }
   ]
}

Is it possible to get a list of all the node-names?
So for example, I want a list like: type, street, city.

Answer 1

Try this

$arr = (json_decode($json)->result[0]);
 $array = get_object_vars($arr);
 $properties = array_keys($array);
 print_r($properties);`

Out put will be

Array
(
    [0] => type
    [1] => street
    [2] => city
)