JSON解码问题

Question

I have the following code:

$instance = new riotapi($srg_lower);
    $grab_data = $instance->getSummonerByName($summoner_nm);
    $decode_data = json_decode($grab_data);
    $grab_id = $decode_data->{'id'};

    $grab_runes = $instance->getSummoner($grab_id,'runes');
    $decode_runes = json_decode($grab_runes);
    $grab_names = $decode_runes->{'name'};

Note: getSummonerByName requires a name, getSummoner uses the ID.

EDIT: Heres an example of $decode_runes: http://pastebin.com/6h2TX9t1

EDIT: Heres an example of $grab_runes: http://pastebin.com/V3MNtbFA

I get values from using var_dump() from everything but when I go to var_dump() $grab_names I get the return value NULL.

I understand that this issue might be staring me in the face, but I can't see it ^^; So I am grateful to anyone who can point it out!

Answer 1

Thanks for adding the $grab_runes dump. By taking the string and pasting it into JSONLint, you can get a very clear picture of your JSON structure. And what is clear from that picture, is that there is not a name property on the root object represented by the JSON.

The only root properties are summonerId and pages.

So your problem is name does not exist in the JSON structure where you are trying to access it, so when you decode it and try to access it, you are of course going to get a null value.

It looks like there is a name property nested down a little further.

So, to access it would be something like this:

$decode_runes->pages[i]->name

Where i is the index of the page you are interested in (there are several of these in your data).