How to avoid PHP Notice “Undefined offset: 0” without checking each field of array

Question

i have the following array:

    $keyvisual_data = array(
        \'video_file\'            => $row->field_field_video[0][\'rendered\'][\'#item\'][\'uri\'],         


        

Answer 1

To be honest, the structure of the row data object doesnt seem very convinient and error prone. Especially if you are using $row in some other context, too, I would suggest you wrap it in an object:

class RowWrapper
{
    private $_row;

    public function __construct($row)
    {
        $this->_row = $row;
    }

    public function getVideoFile()
    {
        if (!isset($row->field_field_video[0])) {
            return null;
        }

        return $row->field_field_video[0]['rendered']['#item']['uri'];
    }

    ...
}

$rowWrapper = new RowWrapper($row);

$keyvisual_data = array(
    'video_file'            => $rowWrapper->getVideoFile(),
    ...
);

If you there is only one value e. g. inside of $row->field_field_video then it shouldnt be an array. I would use a wrapper class as a kind of anti corruption layer if that strange datastructure comes from a remote source or the like. Otherwise it will creep through your while application with $row->field_field_video[0]... stuff all over the place.

I know this is not the fast and easy solution you want, but swallowing errors is never a good idea.