使用循环php在多维数组上添加项目

Question

我有一个 json，我需要获取特定值并使用 foreach 循环插入到数组中。然后我将它转换回 json 以检查我是否得到相同的数组/json 格式或输出。但我无法让它发挥作用。有人能帮助我吗。谢谢！

这是源格式：

但这是我在 foreach 循环中生成的内容：

这是我的代码。

$test_json= '{ "product": { "title": "Burton Custom Freestyle 151", "body_html": "<strong>Good snowboard!</strong>", "vendor": "Burton", "product_type": "Snowboard", "variants": [ { "option1": "Blue", "option2": "155" }, { "option1": "Black", "option2": "159" } ], "options": [ { "name": "Color", "values": [ "Blue", "Black" ] }, { "name": "Size", "values": [ "155", "159" ] } ] } }';

$test_product = json_decode($test_json, true); 

$attributes2 = $test_product['product']['options'];

$options_arr = array();

foreach ($attributes2 as $attribute) {

$options_arr['name'] = $attribute['name'];

    foreach ($attribute['values'] as $option) {

        $options_arr['values'][] = $option;

    }         

}

$options_json = json_encode($options_arr);

var_dump($options_json);

Answer 1

我认为这就是您要寻找的......这也没有您的代码那么复杂。<?php$test_json= '{ "product": { "title": "Burton Custom Freestyle 151", "body_html": "<strong>Good snowboard!</strong>", "vendor": "Burton", "product_type": "Snowboard", "variants": [ { "option1": "Blue", "option2": "155" }, { "option1": "Black", "option2": "159" } ], "options": [ { "name": "Color", "values": [ "Blue", "Black" ] }, { "name": "Size", "values": [ "155", "159" ] } ] } }';$test_product = json_decode($test_json);&nbsp;$options = $test_product->product->options;// Check whatever you like in this for eachforeach ($options as $option) {&nbsp; &nbsp; // Example&nbsp; &nbsp; switch ($option->name) {&nbsp; &nbsp; &nbsp; &nbsp; case 'Color':&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; echo 'this is the color array';&nbsp; &nbsp; &nbsp; &nbsp; break;&nbsp; &nbsp; }}$options_json = json_encode($options);var_dump($options_json);?>

Answer 2

如果我没有误解你的要求，那么你只需要这样做就可以得到你想要的，<?php$test_json= '{ "product": { "title": "Burton Custom Freestyle 151", "body_html": "<strong>Good snowboard!</strong>", "vendor": "Burton", "product_type": "Snowboard", "variants": [ { "option1": "Blue", "option2": "155" }, { "option1": "Black", "option2": "159" } ], "options": [ { "name": "Color", "values": [ "Blue", "Black" ] }, { "name": "Size", "values": [ "155", "159" ] } ] } }';$test_product = json_decode($test_json, true);&nbsp;$attributes2 = $test_product['product']['options'];$expected = ['options'=>$attributes2];echo json_encode($expected);?>演示： https: //3v4l.org/5r6WI

Answer 3

您正在覆盖循环中的 name 键，您需要执行以下操作：foreach ($attributes2 as $attribute) {&nbsp; &nbsp; $data = [&nbsp; &nbsp; &nbsp; &nbsp; "name" => $attribute["name"],&nbsp; &nbsp; &nbsp; &nbsp; "values" => []&nbsp; &nbsp; ];&nbsp; &nbsp; foreach ($attribute['values'] as $option) {&nbsp; &nbsp; &nbsp; &nbsp; $data['values'][] = $option;&nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; $options_arr[] = $data;}