Iterate through deeply nested array in PHP - php

Question

I have data saved in JSON format (Prestashop) - I need to get to that data - which is deeply nested in arrays.
Here is the function:
public static function getAllCustomizedDatas($id_cart, $id_lang = null, $only_in_cart = true, $id_shop = null)
{
$datas = parent::getAllCustomizedDatas($id_cart, $id_lang, $only_in_cart, $id_shop);
var_dump($datas);
/*
* Iterate over $datas, you're looking for
* [id_product][id_product_attribute][id_address_delivery][id_customization][datas]
* Datas will contain an array of fields broken by their type. You can then decode
* the ones that need to be decoded and return the result:
*/
return $datas;
}
if I var_dump $datas I see this (I formatted this to make it a little easier for myself to read):
array(1) {
[8]=> array(1) {
[0]=> array(1) {
[0]=> array(2) {
[22]=> array(4) {
["datas"]=> array(1) {
[1]=> array(1) {
[0]=> array(9) {
["id_customization"]=> string(2) "22"
["id_address_delivery"]=> string(1) "0"
["id_product"]=> string(1) "8"
["id_customization_field"]=> string(1) "2"
["id_product_attribute"]=> string(1) "0"
["type"]=> string(1) "1"
["index"]=> string(1) "2"
["value"]=> string(615) "[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]"
["name"]=> string(20) "Client Customization"
}
}
}
["quantity"]=> int(2)
["quantity_refunded"]=> int(0)
["quantity_returned"]=> int(0)
}
[23]=> array(4) {
["datas"]=> array(1) {
[1]=> array(1) {
[0]=> array(9) {
["id_customization"]=> string(2) "23"
["id_address_delivery"]=> string(1) "0"
["id_product"]=> string(1) "8"
["id_customization_field"]=> string(1) "2"
["id_product_attribute"]=> string(1) "0"
["type"]=> string(1) "1"
["index"]=> string(1) "2"
["value"]=> string(615) "[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]"
["name"]=> string(20) "Client Customization"
}
}
}
["quantity"]=> int(2)
["quantity_refunded"]=> int(0)
["quantity_returned"]=> int(0)
}
}
}
}
}
What will be the easiest way to get to the ["value"] portion of the deeply nested array?
This has to be fairly dynamic because depending on the amount of items this user has - the amount of arrays will change. In this example, there are 2 there (each with 2 items in 'value'). A user could add 3 or 4 or 10 items if they wanted to. But I'm just trying to get to ['value'] and convert that JSON into HTML for the view this is getting passed to.
Bonus: Know of a way to easily iterate through the JSON data?
The JSON data looks like this:
[
[{
"name": "item[1][line1]",
"customization": "asdf"
}, {
"name": "item[1][line2]",
"customization": ""
}, {
"name": "item[1][line3]",
"customization": ""
}, {
"name": "item[1][line4]",
"customization": ""
}, {
"name": "item[1][line5]",
"customization": ""
}, {
"name": "item[1][line6]",
"customization": ""
}, {
"name": "item[1][line7]",
"customization": ""
}],
[{
"name": "item[2][line1]",
"customization": "asdf"
}, {
"name": "item[2][line2]",
"customization": ""
}, {
"name": "item[2][line3]",
"customization": ""
}, {
"name": "item[2][line4]",
"customization": ""
}, {
"name": "item[2][line5]",
"customization": ""
}, {
"name": "item[2][line6]",
"customization": ""
}, {
"name": "item[2][line7]",
"customization": ""
}]
]

Answer 1

I ended up just nesting a bunch of foreach statements until I had arrived at the array I wanted to. It was ugly, but functional.
Then I did json_decode across the JSON and iterated across it.

Answer 2

https://packagist.org/packages/ishworkh/multi-level-array-iterator
This might be helpful in iterating through deep nested array. And then use key or hierarchy information to filter out value needed for you.
Lets say this is your array
$array = [
[
[
[
[
"datas" => [
[
[
"id_customization" => "22",
"id_address_delivery" => "0",
"id_product" => "8",
"id_customization_field" => "2",
"id_product_attribute" => "0",
"type" => "1",
"index" => "2",
"value" => '[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]',
"name" => "Client Customization",
],
],
],
"quantity" => 2,
"quantity_refunded" => 0,
"quantity_returned" => 0,
],
[
[
[
[
"id_customization" => "23",
"id_address_delivery" => "0",
"id_product" => "8",
"id_customization_field" => "2",
"id_product_attribute" => "0",
"type" => "1",
"index" => "2",
"value" => '[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]',
"name" => "Client Customization",
],
],
],
"quantity" => 2,
"quantity_refunded" => 0,
"quantity_returned" => 0,
],
],
],
],
];
You could create a function like this, that uses multi-level-array-iterator's iterate method to go over all the nested array and
yield out found values.
/**
* #param array $nestedArray
*
* #return Generator
*/
function extractValuesFromArray(array $nestedArray):Generator
{
// $key is the local index key, which in this case should be 'value' we are looking to filter for
foreach(\ArrayIterator\ArrayIteratorFacade::iterate($nestedArray) as $key => $ArrayElement)
{
if ('value' === $key)
{
yield $ArrayElement->getValue();
}
}
}
var_dump(iterator_to_array(extractValuesFromArray($array)));
should give
array(2) {
[0]=>
string(643) "[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]"
[1]=>
string(643) "[[{"name":"item[1][line1]","customization":"asdf"},{"name":"item[1][line2]","customization":""},{"name":"item[1][line3]","customization":""},{"name":"item[1][line4]","customization":""},{"name":"item[1][line5]","customization":""},{"name":"item[1][line6]","customization":""},{"name":"item[1][line7]","customization":""}],[{"name":"item[2][line1]","customization":"asdf"},{"name":"item[2][line2]","customization":""},{"name":"item[2][line3]","customization":""},{"name":"item[2][line4]","customization":""},{"name":"item[2][line5]","customization":""},{"name":"item[2][line6]","customization":""},{"name":"item[2][line7]","customization":""}]]"
}