我有以JSON格式保存的数据（Prestashop） - 我需要到那些数据 - 这些数据深深地嵌套在数组中。
这是功能：
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;
}
如果我var_dump $ datas我看到了这个（我将其格式化为使自己更容易阅读）：
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)
}
}
}
}
}
进入深层嵌套数组的[＆＃34; value＆＃34;]部分的最简单方法是什么？
这必须是相当动态的，因为取决于该用户具有的项目数量 - 数组的数量将发生变化。在这个例子中，那里有2个（每个都有2个项目在＆＃39;值＆＃39;）。如果用户可以添加3或4或10个项目。但我只是想尝试[＆＃39;重视＆＃39;]并将该JSON转换为HTML，以便传递给它的视图。
奖励：知道一种轻松迭代JSON数据的方法吗？
JSON数据如下所示：
[
[{
"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": ""
}]
]
答案 0 :(得分：0)
我最终只是嵌套了一堆foreach语句，直到我到达了我想要的数组。它很难看，但很实用。
然后我在JSON上做了json_decode并迭代了它。
答案 1 :(得分：0)
https://packagist.org/packages/ishworkh/multi-level-array-iterator
这可能有助于迭代深层嵌套数组。然后使用密钥或层次结构信息来过滤掉您所需的值。
让我们说这是你的数组
$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,
],
],
],
],
];
您可以创建一个这样的函数，它使用多级数组迭代器的迭代方法来遍历所有嵌套数组和 产出找到的值。
/**
* @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)));
应该给出
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":""}]]"
}