PHP - undefined offset: 0

Question

print_r($p->attachments) produces:

Array
(
    [0] => stdClass Object
        (
            [id] => ...
            [url] => http://         


        

Answer 1

You can use isset() for check the array:

if(isset($p->attachments[0])){
    echo $p->attachments[0]->url;
}
else {
  //some error?
}

Or if you know that you are only going to be checking index 0 then you can do this way

$array = $array + array(null);

So if the original $array[0] was unset, now it is null