getting Undefined property: stdClass::$insertion when try to parse JSON array

Question

i have this json on which i try to extract the insertion-orders array

{
    "response" : {
        "status" : "OK",
        "count" : 1,
        "insertion-orders" : [{
                "id" : 5,
                "name" : "First Choice",
                "code" : null,
                "state" : "active",
                "line_items" : [{
                        "id" :352,
                        "timezone" : "Europe/London"
                    }, {
                        "id" :358,
                        "timezone" : "Europe/London"
                    }
                ],
                "labels" : null,
                "safety_pacing" : true
            }
        ]
    }
}

what im doing is TheJson is the json string:

$Json = json_decode($TheJson);
$JsonResponse = $Json->response;
$OrdersArray = $JsonResponse->insertion-orders;

the error im getting is :

Notice: Undefined property: stdClass::$insertion in /home/foo/a/foo.com/user/htdocs/FunctionManager.php on line 16

Notice: Use of undefined constant orders - assumed 'orders' in /home/foo/a/foo.com/user/htdocs/FunctionManager.php on line 16

line 16 is :

 $OrdersArray = $JsonResponse->insertion-orders;

i just don't get it , its valid json

But its not valid PHP

DevlshOne
– DevlshOne

2013-07-10 20:20:15 +00:00
Commented Jul 10, 2013 at 20:20 — DevlshOne
– DevlshOne, Commented Jul 10, 2013 at 20:20
Use $JsonResponse->{'insertion-orders'}

bystwn22
– bystwn22

2013-07-10 20:22:52 +00:00
Commented Jul 10, 2013 at 20:22 — bystwn22
– bystwn22, Commented Jul 10, 2013 at 20:22

Marc B · Accepted Answer · 2013-07-10 20:20:17Z

2

$JsonResponse->insertion-orders;

is parsed as

$JSonResponse->insert MINUS orders

You can't use - in an object attribute name using the arrow notation. It'll have to be

$JsonResponse->{'insertion-orders'}

instead.

As for your comment about it being valid JSON, it wouldn't have worked in Javascript either:

json.insertion-orders

will also be seen as json.insertion MINUS orders.

answered Jul 10, 2013 at 20:20

Marc B

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5 Comments

Barmar Over a year ago

Are you allowed to use array notation with objects in PHP?

Orangepill Over a year ago

i think it would be possible to do $JsonResponse->{"insertion-orders"} but a better idea may be to pass true as the second argument to the json_decode and deal with it as an array.

Marc B Over a year ago

Right. Brainfart on my part and mixing up JS/php. Edited the answer.

Orangepill Over a year ago

but in js it is valid to day json["insertion-orders"]

Barmar Over a year ago

+1 for explaining why the original code fails, even though you were slow to post the right solution.

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