“get_object_vars（）期望参数1为对象，字符串为”

Question

Got this error:

login: demo
password: ****
[AJAX] Invalid JSON - Server reponse is: 
<br />
<b>Warning</b>:  get_object_vars() expects parameter 1 to be object, string given in <b>C:\wamp\www\examples\json-rpc\json-rpc.php</b> on line <b>75</b><br />
<br />
<b>Warning</b>:  get_object_vars() expects parameter 1 to be object, string given in <b>C:\wamp\www\examples\json-rpc\json-rpc.php</b> on line <b>75</b><br />
<br />
<b>Warning</b>:  get_object_vars() expects parameter 1 to be object, string given in <b>C:\wamp\www\examples\json-rpc\json-rpc.php</b> on line <b>75</b><br />
{"jsonrpc":"2.0","result":null,"id":"2","error":{"code":-32600,"message":"Invalid Request: no method"}}

In the actual file it's referring to it says

// return object field if exist otherwise return default value
function get_field($object, $field, $default) {
  $array = get_object_vars($object);
  if (isset($array[$field])) {
    return $array[$field];
  } else {
    return $default;
  }
}

Can I just change it to "get_string_vars"? Or does it have to stay an object to do with the passwords? I'm a bit of a noob, just working on a project, thanks.

Answer 1

You need to pass get_field() an object not a string.

You probably need to do something like:

$object = json_decode($input);
$result = get_field($object, $field, $default);