iterate through array (recieved via json) to get values

Question

I'm trying to get the IDs of the steam groups someone is connected to. Here is the json output:

{
    "response": {
        "success": true,
        "groups": [
            {
                "gid": "111"
            },
            {
                "gid": "222"
            },
            {
                "gid": "333"
            },
            {
                "gid": "444"
            },
            {
                "gid": "555"
            }
        ]

    }
}

I've attempted it via:

$groupIDs = $reply['response']['groups'];
foreach ($groupIDs as $gID) {
    // Do stuff
}

I'm getting the following error, but I'm struggling to see how to correct it.

Invalid argument supplied for foreach()

Sorry I didn't make it clear. I'm already decoding it before the foreach().

    $reply = json_decode($reply, true);

Ravinder Reddy · Accepted Answer · 2016-06-22 15:18:42Z

1

First you have to decode the json string using php function json_decode. Then iterate the object as shown below

$string = '{
    "response": {
        "success": true,
        "groups": [
            {
                "gid": "111"
            },
            {
                "gid": "222"
            },
            {
                "gid": "333"
            },
            {
                "gid": "444"
            },
            {
                "gid": "555"
            }
        ]

    }
}';
$array = json_decode($string);

foreach($array->response->groups as $value ){
    echo $value->gid;
    echo "<br/>";
}

answered Jun 22, 2016 at 15:18

Ravinder Reddy

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Comments

Jean Marcos · Accepted Answer · 2016-06-22 15:18:54Z

1

http://php.net/manual/pt_BR/function.json-decode.php

Try:

$response = json_decode($reply, true);
$groupIDs = $response['response']['groups'];
foreach ($groupIDs as $gID) {
    // Do stuff
}

answered Jun 22, 2016 at 15:18

Jean Marcos

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1 Comment

JustOnUnderMillions Over a year ago

What about "gid"?? $gID sounds like you have them already!

Sylvain Guilbert · Accepted Answer · 2016-06-22 15:17:48Z

0

use json_decode($response) cf doc

$rep = json_decode($response)
foreach ($rep->response->groups as $gID) {
    // Do stuff
}

answered Jun 22, 2016 at 15:17

Sylvain Guilbert

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Comments

JustOnUnderMillions · Accepted Answer · 2016-06-22 15:19:33Z

0

$groups = $reply['response']->groups;
foreach ($groups as $group) {
    print $group->gid;
}

In json each {} means is parsed as object, each [] is parsed as array.

answered Jun 22, 2016 at 15:19

JustOnUnderMillions

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