引用动态关联数组位置

Question

I'm requesting data from an online source which I then decode into json StdClass objects (using php). Once I've done this I have the following (see below). I'm trying to extract the elements in 'otherstuff' by doing echo $response->stuff->WHAT GOES HERE?->otherstuff

However I cant hard code the [2010-12] because its a date, is there any way I can call e.g. $response->stuff->nextsibling->stuff

I hope this makes sense to someone :D Currently i'm bastardising this with a $key => $value for loop and extracting the key value and using it in my $response->stuff->$key->stuff call.

stdClass Object
(
    [commentary] => 
    [stuff] => stdClass Object
        (
            **[2010-12]** => stdClass Object
                (
                    [otherstuff] => stdClass Object
                        (
                            [otherstuffrate] => 1
                            [otherstufflevel] => 1
                            [otherstufftotal] => 1
                        )    
                )

        )

) 

Answer 1

StdClass instances can be used with some Array Functions, among them

• current — Return the current element in an array and
• key — Fetch a key from an array

So you can do (codepad)

$obj = new StdClass;
$obj->{"2012-10"} = 'foo';
echo current($obj); // foo
echo key($obj); // 2012-10

On a sidenote, object properties should not start with a number and they may not contain dashes, so instead of working with StdClass objects, pass in TRUE as the second argument to json_decode. Returned objects will be converted into associative arrays then.