Search array of objects for multidimensional array values in PHP - php

Question

I have following task to do, if there is any chance I would appreciate some help to make it in as efficient way as possible. I need to compare values from array of objects (which comes from Laravel Query Builder join query) with array values.
Objects consist of database stored values:
0 => array:2 [
0 => {#912
+"addition_id": 1
+"valid_from": "2015-09-13 00:00:00"
+"valid_to": "2015-09-19 00:00:00"
+"price": "0.00"
+"mode": 0
+"alias": "Breakfast"
}
1 => {#911
+"addition_id": 2
+"valid_from": "2015-09-13 00:00:00"
+"valid_to": "2015-09-19 00:00:00"
+"price": "10.00"
+"mode": 1
+"alias": "Dinner"
}
while array includes new data, being processed by my method.
0 => array:3 [
0 => array:6 [
"id" => 1
"alias" => "Breakfast"
"price" => "0.00"
"mode" => 0
"created_at" => "2015-09-12 21:25:03"
"updated_at" => "2015-09-12 21:25:03"
]
1 => array:6 [
"id" => 2
"alias" => "Dinner"
"price" => "10.00"
"mode" => 1
"created_at" => "2015-09-12 21:25:18"
"updated_at" => "2015-09-12 21:25:18"
]
2 => array:6 [
"id" => 3
"alias" => "Sauna Access"
"price" => "50.00"
"mode" => 0
"created_at" => "2015-09-12 21:25:35"
"updated_at" => "2015-09-12 21:25:35"
]
]
Now, what I need to do is to find out what position of the array was not in the object (compare id with addition_id) and return it.
Is there any way to do it without two nested foreach loops? I think it can be done somehow smart with array_filter, but I'm not really sure how to write efficient callback (beginner here).
The only way I could get around this was:
private function compareAdditions(array $old,array $new)
{
$difference = $new;
foreach($new as $key => $value) {
foreach($old as $oldEntry) {
if($oldEntry->addition_id == $value['id']) {
unset($difference[$key]);
}
}
}
return $difference;
}
But I would really like to make it without two foreach loops. Help will be very appreciated :)

Answer 1

This might be overkill but it uses a function i write in every project, precisely for these kind of situations :
function additionals($original, $additions) {
$nonExisiting = [];
//convert all the objects in arrays
$additions = json_decode(json_encode($additions), true);
//create an index
$index = hashtable2list($original, 'id');
for(reset($additions); current($additions); next($additions)) {
$pos = array_search(current($additions)['addition_id'], $index);
if($pos !== false) {
//We could replace the originals with the additions in the same loop and save resources
//$original[$pos] = current($additions);
} else {
$nonExisiting[] = current($additions);
}
}
return $nonExisiting;
}
function hashtable2list( $hashtable, $key ){
$array = [];
foreach($hashtable as $entry) {
if( is_array($entry) && isset($entry[$key])) {
$array[] = $entry[$key];
} elseif( is_object($entry) && isset($entry->$key) ) {
$array[] = $entry->$key;
} else {
$array[] = null;
}
}
return $array;
}