PHP: Foreach accessing values for improperly indexed array

i have an improperly index being provided by an api call as below

(
    [0] => stdClass Object
        (
            [xml] =>  
            [qid] =>1
            [title] => Tile of the question 
            [description] => Description of the question here
        )

    [1] => xml for quetion 1 
    [2] => stdClass Object
        (
            [xml] =>  
            [qid] => 2
            [title] => Updated Question 
            [description] => description changed for edting
        )

    [3] => xml for quetion 2  
)

i can access the value in foreach loop but problem is that xml for each question is being set in next index on the loop:

foreach ($array as  $key =>$node) {
     $title = $node->title;
     $des = $node->description;
     $qid = $node->qid;
     if($node->xml==''){
         // set xml value here in 1  and 3 index seen as in above output 
      }
    }

how can i do that pls advise

Answer

just try this:

foreach ($array as  $key =>$node) {
    try {
        $title = $node->title;
        $des = $node->description;
        $qid = $node->qid;
        if($node->xml==''){
            $xml = $array[$key + 1];
        }
        echo "Added row with index $key";
    } catch (Throwable $th) {
        echo "That was a xml row - The key is $key";
    }
}