开发者

Referencing a dynamic associative array position

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开发者_如何学Python '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
                        )    
                )

        )

) 


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.


The date key must be a string, otherwise PHP breaks ;).

echo $response->stuff['2010-12']->otherstuff

Retrieve it using a string.


Edited again: added object code also

json decode it as associative array, and use key fetched through array_keys . See it work here : http://codepad.org/X8HCubIO

    <?php

$str = '{
       "commentary" : null,
        "stuff" : {
            "ANYDATE" : {
                "otherstuff": {
                    "otherstuffrate" : 1,
                    "otherstufflevel" : 1,
                    "otherstufftotal" : 1
                }
            }
        }
      }';

$obj = json_decode($str,true);
$reqKey = array_keys($obj["stuff"]);
$req = $obj["stuff"][$reqKey[0]]["otherstuff"];
print_r($req);
print "====================as object ============\n";
$obj = json_decode($str);
$req = current($obj->stuff)->otherstuff; 
print_r($req);
?>
0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜