Create and fill an associative array of multiples dimensions - php

Question

I'm currently trying to create an associative array which will have two dimensions and I think a solution for this probleme could resolve problemes for array with more dimensions.
I recover data with an API which look like that :
{
"item_id": "89",
"name": "Confiture de Myrtilles",
"product_id": "737",
"meta_key": "vmm_warehouse_sg_10783",
"meta_value": "0"
},
{
"item_id": "89",
"name": "Confiture de Myrtilles",
"product_id": "737",
"meta_key": "vmm_warehouse_sg_10782",
"meta_value": "0"
},
{
"item_id": "91",
"name": "Poires Guyot (bio)",
"product_id": "690",
"meta_key": "_backorders",
"meta_value": "no"
},
{
"item_id": "91",
"name": "Poires Guyot (bio)",
"product_id": "690",
"meta_key": "_sold_individually",
"meta_value": "no"
},
I just want to create an array like this :
array[item_id->[meta_key->meta_value]]
So I have to recover the item_id which will have the role of the secondth array and after put in this array the meta_key and meta_value associated.
So for example I will have an array like this :
Products[89]["vmm_warehouse_sg_10783"->"0"
"vmm_warehouse_sg_10782"->"0"]
And an other like this :
Products[91][........]
At the end, I will have a final array like this :
Products [ [89]->{"vmm_warehouse_sg_10783"->"0","vmm_warehouse_sg_10782"->"0"}
[91]->{.....}]
I have already tried something but I'm just a beginner and I don't found solution for my problem.
$Products = $this->wpdb->get_results( $SQL_Deliveries );
//this line allow $Products to recover all data from the API
foreach ( $Products as $Product ) {
$Meta_products[] = Product->item_id;
foreach($Product as $Product_meta){
$Meta_products[$item_id]->{Product_meta->meta_key,Product_meta
->meta_value);
}
I'm sure I did mitakes in my code too, but I really don't know how to resolve this problem. Thank you for your participation !

Answer 1

It looks like you want a multidimensional object array.
There is a little bit of fiddling involved to declare nested objects. The curly bracing is also necessary.
Code: (Demo)
$products = [
(object)["item_id" => "89",
"name" => "Confiture de Myrtilles",
"product_id" => "737",
"meta_key" => "vmm_warehouse_sg_10783",
"meta_value" => "0"
],
(object)["item_id" => "89",
"name" => "Confiture de Myrtilles",
"product_id" => "737",
"meta_key" => "vmm_warehouse_sg_10782",
"meta_value" => "0"
]
];
$result = (object)[];
foreach($products as $product) {
if (!isset($result->{$product->item_id})) {
$result->{$product->item_id} = (object)[];
}
$result->{$product->item_id}->{$product->meta_key} = $product->meta_value;
}
var_export($result);
Output:
(object) array(
'89' =>
(object) array(
'vmm_warehouse_sg_10783' => '0',
'vmm_warehouse_sg_10782' => '0',
),
)
Alternatively, to generate the nested object structure, you could build an array of arrays, then use json_encode(), then json_decode() on the result.
If you want an array as output, that's easiest:
Code: (Demo)
$products = [
(object)["item_id" => "89",
"name" => "Confiture de Myrtilles",
"product_id" => "737",
"meta_key" => "vmm_warehouse_sg_10783",
"meta_value" => "0"
],
(object)["item_id" => "89",
"name" => "Confiture de Myrtilles",
"product_id" => "737",
"meta_key" => "vmm_warehouse_sg_10782",
"meta_value" => "0"
],
(object)["item_id" => "91",
"name" => "Poires Guyot (bio)",
"product_id" => "690",
"meta_key" => "_backorders",
"meta_value" => "no"
],
(object)["item_id" => "91",
"name" => "Poires Guyot (bio)",
"product_id" => "690",
"meta_key" => "_sold_individually",
"meta_value" => "no"
]
];
$result = [];
foreach($products as $product) {
$result[$product->item_id][$product->meta_key] = $product->meta_value;
}
var_export($result);
Output:
array (
89 =>
array (
'vmm_warehouse_sg_10783' => '0',
'vmm_warehouse_sg_10782' => '0',
),
91 =>
array (
'_backorders' => 'no',
'_sold_individually' => 'no',
),
)

Answer 2

I don't fully understand what are you trying to achieve, but I suppose you want associative array with id as the key and array of meta_key and meta_value as its value?
If so, then:
foreach ( $Products as $Product ) {
$Meta_products[$Product->item_id][$Product->meta_key] = $Product->meta_value;
}