Problems with looping a json - php

Question

Here I have a json which i get after making a request to the twitter API. I have already seen different working examples of looping a json. Even I have do it in another projects. But this time it isn't working.
I've tested a lot of things. I guess it's normal it doesn't work for now. The variable arrayFriends isn't even being used. Just i was testing some moves.
Don't know exactly where I am failing. I would like to have some feedback
Thank you guys!
$url = 'https://api.twitter.com/1.1/friends/ids.json';
$getfield = '?screen_name=J7mb0';
$requestMethod = 'GET';
$twitter = new TwitterAPIExchange($settings);
$json = $twitter->setGetfield($getfield)
->buildOauth($url, $requestMethod)
->performRequest(true, array(CURLOPT_CAINFO => dirname(__FILE__) . '/cacert.pem'));
echo $twitter->setGetfield($getfield)
->buildOauth($url, $requestMethod)
->performRequest(true, array(CURLOPT_CAINFO => dirname(__FILE__) . '/cacert.pem'));
$arrayFriends = var_dump(json_decode($json, true, 512, JSON_BIGINT_AS_STRING));
$json = json_decode($json, true);
echo $json;
foreach($json->ids as $obj){
echo $obj->ids;
}

Answer 1

If you're using json_decode with true, the returned value will be an array, not an object.
Therefore, you won't be able to use the property-access method here:
foreach($json->ids as $obj){
You have to use the array-access method instead:
foreach($json['ids'] as $obj){
or, change the parameter at decoding, so you get an object:
$json = json_decode($json, false);
// or just simply:
// $json = json_decode($json);
// since the second parameter defaults to FALSE
ALSO, $arrayFriends will remain empty, because var_dump returns nothing at all.
// Change this:
// $arrayFriends = var_dump(json_decode($json, true, 512, JSON_BIGINT_AS_STRING));
// ...to this:
$arrayFriends = json_decode($json, true);

Answer 2

It worked! After trying different things it started working.
Actually I'm trying to access another json but this isn't working. It is the same app but with more content.
$user = 'seyroku';
$url = 'https://api.twitter.com/1.1/friends/ids.json';
$getfield = '?screen_name='.$user.'';
$requestMethod = 'GET';
$twitter = new TwitterAPIExchange($settings);
$json = $twitter->setGetfield($getfield)
->buildOauth($url, $requestMethod)
->performRequest(true, array(CURLOPT_CAINFO => dirname(__FILE__) . '/cacert.pem'));
$arrayFriends = json_decode($json, true,512,JSON_BIGINT_AS_STRING);
foreach($arrayFriends['ids'] as $obj){
echo $obj,",";
$url2 = 'https://api.twitter.com/1.1/users/lookup.json';
$getfield2 = '?user_id='.$obj.'';
$json2 = $twitter->setGetfield($getfield2)
->buildOauth($url2, $requestMethod)
->performRequest(true, array(CURLOPT_CAINFO => dirname(__FILE__) . '/cacert.pem'));
echo $twitter->setGetfield($getfield2)
->buildOauth($url2, $requestMethod)
->performRequest(true, array(CURLOPT_CAINFO => dirname(__FILE__) . '/cacert.pem'));
$json3 = json_decode($json2, true);
foreach ($json3['name'] as $nombre) {
echo $nombre,",";
}
/* $sql = "INSERT INTO friendtest (user, friends)
VALUES ('$user' , '$obj' )";
if (mysqli_query($conn, $sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}*/
}
The first for each it returns me the id properly. But the second one which I expect to give me the name of that id doesn't do it. I tried different things but still isn't working.
Could you give me some feedback?
Sorry guys for being so bad at this.