Laravel php get last element in multidimensional array - php

Question

I have the following json file with products details:
"products": [
{
"sku": 123,
"name": "iphone 7",
"categoryPath": [
{
"id": "abcat0800000",
"name": "Cell Phones"
},
{
"id": "pcmcat209400050001",
"name": "All Cell Phones with Plans"
}
],
}
]
I would like only to store the last value (ID and NAME) of the categoryPath Array:
"id": "pcmcat209400050001",
"name": "All Cell Phones with Plans"
My current code takes the json file, decode the json and insert in products table the information.
$json = File::get("/json/cell-0.json");
$data = json_decode($json);
$array1 = (array)$data;
//table products
foreach ($array1['products'] as $obj) {
DB::table('products')->insert(array(
'productSku' => ((isset($obj->sku) ? $obj->sku : 1)),
'productName' => ((isset($obj->name) ? $obj->name : null)),
'categoryId' => end($obj->categoryPath->id),
'categoryName' => end($obj->categoryPath->name)
));
Taking into consideration that array->categoryPath have multiple fields I would like to use a function (eg: end()) in order to take id and name only of the last values.
Using end($obj->categoryPath->id) I receive the following error ->
Attempt to modify property of non-object
Is this the best way to retrieve the last value of a multidimensional array?

Answer 1

You could use end() probably but your accessors would have to be outside the end() call (untested):
foreach ($array1['products'] as $obj) {
DB::table('products')->insert(array(
'productSku' => ((isset($obj->sku) ? $obj->sku : 1)),
'productName' => ((isset($obj->name) ? $obj->name : null)),
'categoryId' => end($obj->categoryPath)->id,
'categoryName' => end($obj->categoryPath)->name
));

Answer 2

The way you're getting the last element is incorrect, here is the refactored code. I also eliminated the need to cast data as an array as well.
$json = File::get("/json/cell-0.json");
$data = json_decode($json, true);
//table products
foreach ($data['products'] as $product) {
$lastCategory = isset($product['categoryPath']) && $size = sizeof($product['categoryPath']) ? $product['categoryPath'][$size-1] : array('id' => null, 'name' => null);
DB::table('products')->insert(
array(
'productSku' => isset($product['sku']) ? $product['sku'] : 1,
'productName' => isset($product['name']) ? $product['name'] : null,
'categoryId' => lastCategory['id'],
'categoryName' => lastCategory['name']
)
);
}