PHP array returning only 1 item - php

Question

I have this part of my code which should return modifier options as an array as shown by the json response below but its only returning 1 item.
{
"id": "Add-sugar",
"external_data": "External data for sugar choice",
"title": {
"translations": {
"en_us": "Add sugar"
}
},
"quantity_info": {
"quantity": {
"max_permitted": 2
},
"overrides": []
},
"modifier_options": [
{
"id": "Sugar",
"type": "ITEM"
}
]
},
{
"id": "Add-milk",
"external_data": "External data for milk choice",
"title": {
"translations": {
"en_us": "Add milk"
}
},
"quantity_info": {
"quantity": {
"max_permitted": 1
},
"overrides": []
},
"modifier_options": [
{
"id": "Milk",
"type": "ITEM"
}
]
}
],
Here is my code below. I want it to return an array of modifier options but I'm only getting array with only one modifier option. May you assist me.
if($option->field_active[$language][0]['value'] <> 0 &&
in_array($uber->field_zone[$language][0]['target_id'], array_column($option->field_zones[$language], 'target_id')) &&
in_array("uber_eats", array_column($option->field_viewable[$language], 'value'))){
$optionInd['id'] = $option->id;
$optionInd['external_data'] = $option->id;
$optionInd['title']['translations']['en'] = ucwords(strtolower($option->name));
$optionInd['price_info']['price'] = (int)$option->field_pricelevel4[$language][0]['value'];
if(isset($option->field_default[$language][0]['value'])){
$optionInd['selected_by_default'] = $option->field_default[$language][0]['value'];
}
if (!in_array($optionInd['id'], array_column($groupInd['modifier_options'], 'id'))){
$groupInd['modifier_options'][] = $optionInd;
}
} //end if option Active
}```
if (!in_array($optionInd['id'], array_column($groupInd['modifier_options'], 'id'))){
$groupInd['modifier_options'][] = array(
"id"=> $optionInd['id'],
"type"=> "ITEM");```
$modifier[] = $groupInd;
$menu = array(
'modifier_groups' => $modifier,
);

Answer 1

perhaps this can help? ($result below is modifier_options array)
$data=json_decode( '{"data":[{"id":"Add-sugar","external_data":"External data for sugar choice","title":{"translations":{"en_us":"Add sugar"}},"quantity_info":{"quantity":{"max_permitted":2},"overrides":[]},"modifier_options":[{"id":"Sugar","type":"ITEM"}]},{"id":"Add-milk","external_data":"External data for milk choice","title":{"translations":{"en_us":"Add milk"}},"quantity_info":{"quantity":{"max_permitted":1},"overrides":[]},"modifier_options":[{"id":"Milk","type":"ITEM"}]}]}',true); # define $data as associative array
$result=[];
foreach ($data['data'] as $a){
array_push($result, $a['modifier_options']);
}
print_r($result);
Output:
Array
(
[0] => Array
(
[0] => Array
(
[id] => Sugar
[type] => ITEM
)
)
[1] => Array
(
[0] => Array
(
[id] => Milk
[type] => ITEM
)
)
)