PHP - Add a new element into each multidimensional array - php

Question

I have an array that looks like this:
Array
(
[0] => stdClass Object
(
[quiz_id] => 1033
[quiz_venue] => 6
[quiz_host] => 46
[quiz_golden_question] => 100
[quiz_golden_question_outcome] => 0
[quiz_running] => 1
[quiz_status] => 100
[quiz_trainee] => 0
)
[1] => stdClass Object
(
[quiz_id] => 985
[quiz_venue] => 57
[quiz_host] => 21
[quiz_golden_question] => 0
[quiz_golden_question_outcome] => 0
[quiz_running] => 1
[quiz_status] => 310
[quiz_trainee] => 0
)
I want to go through each array, and insert a new value (quiz_venue_name), this is what I have;
$quizzes = $wpdb->get_results( $prepared );
foreach ($quizzes as $quiz => $item) {
$venuetitle = get_the_title($item->quiz_venue);
$quizzes['quiz_venue_name'] = $venuetitle;
}
return $quizzes;
However, all it does is add the new values to the very end of the multidimensional array as new arrays - rather than adding them into each!
I feel like I'm doing something obvious wrong, so any help is much appreciated!
The end result I need would be;
Array
(
[0] => stdClass Object
(
[quiz_id] => 1033
[quiz_venue] => 6
[quiz_host] => 46
[quiz_golden_question] => 100
[quiz_golden_question_outcome] => 0
[quiz_running] => 1
[quiz_status] => 100
[quiz_trainee] => 0
[quiz_venue_name] => NEW VALUE
)
[1] => stdClass Object
(
[quiz_id] => 985
[quiz_venue] => 57
[quiz_host] => 21
[quiz_golden_question] => 0
[quiz_golden_question_outcome] => 0
[quiz_running] => 1
[quiz_status] => 310
[quiz_trainee] => 0
[quiz_venue_name] => NEW VALUE
)

Answer 1

Your $quizzes variable is an array of objects (Instance of stdClass), so you should use it attribute to set value in each iteration ($item->quiz_venue_name instead of $quizzes['quiz_venue_name']):
...
foreach ($quizzes as $quiz => $item) {
$venuetitle = get_the_title($item->quiz_venue);
$item->quiz_venue_name = $venuetitle;
}
...
In fact the $quizzes['quiz_venue_name']=... code will be set a value for index quiz_venue_name in root of $quizzes array.