Invalid argument supplied for foreach() getting no result or errors in Wordpress

Question

I have written and test my php code (not WordPress) it works well. But it doesn't work in WordPress. here's my snippet code (got error result):

function totalTrackLenght($tracklenght){
    global $row, $data, $tracklenght;
    foreach ($data->results as $row) {
        if(!empty($row->trackTimeMillis)){
            $tracklenght += $row->trackTimeMillis;
        }
    }
    return $tracklenght;
}

php file to display the result:

<li class="total-tr-lenght"><?php nextFunction(); ?></li>

I change foreach ($data->results as $row) to foreach ((array)$data->results as $row) is getting no result.

The JSON data obtained from https://itunes.apple.com/us/lookup?id=1434446667&entity=song

Dump the result of $data->results. Probably it is not a iterable object / array. — Timo002, Sep 03 '18 at 07:36

score 0 · Answer 1 · answered Sep 03 '18 at 07:59

0

Most likely your json is not stored as an associative array, if you're processing json with json_decode method, you should set second parameter as true - returned objects will be converted into associative arrays.

$data = json_decode($json, true)

More info about json_decode

answered Sep 03 '18 at 07:59

Marat Badykov

824
4
8

should I change to foreach ($data['results'] as $row) ? – Theresia Vidi Sep 03 '18 at 08:17
Yes, you should. – Marat Badykov Sep 03 '18 at 08:25
getting the same result as above – Theresia Vidi Sep 03 '18 at 08:30
then check if $data is initialized correctly – Marat Badykov Sep 03 '18 at 08:32
yes, it is. I put the code above in the function.php file, I'm stuck wih Wordpress. Whereas it works correctly in one single php file – Theresia Vidi Sep 03 '18 at 14:51

Invalid argument supplied for foreach() getting no result or errors in Wordpress

1 Answers1