Foreach in json array returns an array but not considered as such and can't iterate it

Question

I have a json array (dataArray) sent from js to php using JSON.stringuify.

I'm getting the output after using json_decode that object like this:

$resp = json_decode($dataArray,true);
error_log($resp);

Log:

[{"id":"0","name":"JOAO"},{"id":"1","name":"TONI"},{"id":"2","name":"ANA"}]

I'm trying to get the id and name values from each element in that array.

Using foreach returns an error since the object is not considered as an array... So I tried casting it to an array and then use it in the foreach, and it's size is still 1:

$arr = (array) $res;
error_log(sizeof($arr[0]));
foreach ($arr[0] as $dt) {
    error_log($dt);
}

This returns the "full sized 1 array"

[{"id":"0","name":"JOAO"},{"id":"1","name":"TONI"},{"id":"2","name":"ANA"}]

and if I try error_log($dt->id) I don't get any results...

I'm not understanding why this is not being considered as an array.

If you're managing to call error_log (which expects a string) without any issues, it sounds like your data might be double-encoded? Try json_decode(json_decode($dataArray),true); — iainn
– iainn, Commented Apr 20, 2020 at 15:59

A l w a y s S u n n y · Accepted Answer · 2020-04-20 16:40:32Z

2

Seems you need the html_entity_decode() before decoding it,

$data = html_entity_decode($dataArray);
$output = json_decode($data,true);
foreach ($output as $key=>$dt) {
    echo "id=".$dt['id']," & name=".$dt['name'].PHP_EOL;
}

edited Apr 20, 2020 at 16:40

answered Apr 20, 2020 at 16:09

A l w a y s S u n n y

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Eunito · Accepted Answer · 2020-04-20 16:15:43Z

0

If do as suggested:

$data = html_entity_decode($dataTypesArray);
$output = json_decode($data,true);

//or json_decode(json_decode($dataArray),true);
error_log($output);

foreach ($output as $dt) {
    error_log($dt);
}

I get error_log() expects parameter 1 to be string, array given so I used error_log(json_encode($dt)); I now I get the individual jsons but still no sucess logginf the ID and name...

answered Apr 20, 2020 at 16:15

Eunito

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A l w a y s S u n n y Over a year ago

have a look on my answer again, I've edited it to log the id and name value.

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