如何操作数组，使其在PHP中以json结构返回 - How to manipulate an array so that it returns as json structure in PHP?

我正在尝试循环一个json对象，并将选定的值推送到一个数组中。

$json = '
{
    "canonicalUrl": "/v1/products(offers.type=deal_of_the_day)?format=json&apiKey=946n9vuhdkgeyz2qx2dpxd54",
    "currentPage": 1,
    "from": 1,
    "partial": false,
    "products": [
        {
            "active": true,
            "activeUpdateDate": "2014-11-03T19:43:46",
            "lowPriceGuarantee": true,
            "name": "LG - 1.1 Cu. Ft. Mid-Size Microwave - Black",
            "new": false,
            "onSale": true,
            "productId": 1219180376135,
            "regularPrice": 124.99,
            "salePrice": 99.99,
            "sku": 5998225,
            "source": "bestbuy",
            "startDate": "2014-07-06",
            "type": "HardGood"
        },
        {
            "active": true,
            "activeUpdateDate": "2014-11-03T18:03:02",
            "lowPriceGuarantee": false,
            "name": "Rocketfish In-Wall HDMI Cable",
            "new": false,
            "onSale": true,
            "productId": 1218343205770,
            "regularPrice": 29.99,
            "salePrice": 24.99,
            "sku": 2634897,
            "source": "bestbuy",
            "startDate": "2011-08-14",
            "type": "HardGood"
        }
    ],
    "queryTime": "0.004",
    "to": 2,
    "total": 2,
    "totalPages": 1,
    "totalTime": "0.020"
}
';
$json_output = json_decode($json);
$pBB = array("title" => array(), "type" => array());
foreach($json_output->products as $obj){
    array_push($pBB['title']," {$obj->name}");
    array_push($pBB['type']," {$obj->type}" );
}
echo  json_encode($pBB);

上述代码的输出是

{
  "title": [
    " LG - 1.1 Cu. Ft. Mid-Size Microwave - Black",
    " Rocketfish In-Wall HDMI Cable"
  ],
  "type": [
    " HardGood",
    " HardGood"
  ]
}

我想按下面的方式退货

[
  {
     "title": "LG - 1.1 Cu. Ft. Mid-Size Microwave - Black",
     "type": "HardGood"
  },
  {
     "title": " Rocketfish In-Wall HDMI Cable",
     "type":  " HardGood"
  }
]

有什么想法吗？

根据我对您问题的评论，您使用了一种非传统的方法来将产品组织为值，而应该将每个产品组织为包含其标题和类型的每个产品的单独数组。使用这个替代：

$json_output = json_decode($json);
$pBB = array();
foreach($json_output->products as $obj){
    $pBB[] = array(
        'title' => " {$obj->name}", // Not sure why you're using " {$obj->name}" but I preserved it
        'type' => " {$obj->type}", // You could just use $obj->type directly
    );
}
echo  json_encode(array_values($pBB));

$json_output = json_decode($json);
$pBB = array();
foreach($json_output->products as $obj){
    array_push($pBB, array(
        'title' => " {$obj->name}",
        'type' => " {$obj->type}"
    ));
}
echo  json_encode(array_values($pBB));

试试这个！您需要创建对象并推入数组。

$json = ' { "from": 1, "to": 2, "total": 2, "currentPage": 1, "totalPages": 1, "queryTime": "0.004", "totalTime": "0.020", "partial": false, "canonicalUrl": "/v1/products(offers.type=deal_of_the_day)?format=json&apiKey=946n9vuhdkgeyz2qx2dpxd54","products": [ { "sku": 5998225, "productId": 1219180376135, "name": "LG - 1.1 Cu. Ft. Mid-Size Microwave - Black", "source": "bestbuy", "type": "HardGood", "startDate": "2014-07-06","new": false, "active": true, "lowPriceGuarantee": true, "activeUpdateDate": "2014-11-03T19:43:46", "regularPrice": 124.99, "salePrice": 99.99, "onSale": true},{ "sku": 2634897, "productId": 1218343205770, "name": "Rocketfish In-Wall HDMI Cable", "source": "bestbuy", "type": "HardGood", "startDate": "2011-08-14", "new": false, "active": true,"lowPriceGuarantee": false, "activeUpdateDate": "2014-11-03T18:03:02", "regularPrice": 29.99, "salePrice": 24.99, "onSale": true } ] }';
$json_output = json_decode($json);
foreach($json_output->products as $obj){
    $new_obj = new stdClass();
    $new_obj->title = $obj->name;
    $new_obj->type = $obj->type;    
    $pBB[]= $new_obj;
}
echo  json_encode($pBB);

构建JSON对象时出错。实际上，您在json_decode函数中传递的字符串是可以的，但当您从数组中构建json对象时就会出现问题。

不要使用

$pBB=数组（"title"=>数组（），"type"=>数组）；

而是尝试

$pBB=数组（数组（"title"=>$title，"type"=>$type））；

当你把$pBB编码到Json中时，我想它会给你精确的输出。

快乐编码。Atul

echo  json_encode($pBB);

你需要确保它看起来像是JS的数组（即顺序编号）

用替换上述线路

echo  json_encode(array_values($pBB));

使其按预期工作

数组值返回顺序int作为关键字