Question

我有一个多维数组，里面有3个数组。请参阅下面我的最小可运行示例：

<?php

$array1 = array("Bitcoin", "Ethereum", "Bitcoin Cash");
$array2 = array("BTC", "ETH", "BTC");
$array3 = array("10000", "3000", "6666");


//Multi Dimensional Array
$multi = array($array1, $array2, $array3);
print_r($multi);

foreach($multi as $k =>$a){
  $multi[$k] = json_decode(json_encode($a));
}

print_r($multi);

// $json_data = json_encode($multi);
file_put_contents('data/myfile.json', $multi);

但是，我在输出文件中得到以下输出：

ArrayArrayArray

如何获取如下数据的任何建议：

{
"Bitcoin", 
"BTC", 
"10000"
},
{
"Ethereum", 
"ETH", 
"3000"
},
{
"Bitcoin Cash", 
"BTC", 
"6666"
},

Answer 1

{
"Bitcoin", 
"BTC", 
"10000"
},
{
"Ethereum", 
"ETH", 
"3000"
},
{
"Bitcoin Cash", 
"BTC", 
"6666"
},

是无效的JSON格式。＆＃39; {＆＃39;和＆＃39;}＆＃39;意味着它的地图（对象），所以必须有＆＃39; key：value＆＃39;行如：

{
0: "Bitcoin"
}

阵列使用的正确JSON＆＃39; [＆＃39;和＆＃39;]＆＃39;。

<?php
$array1 = array("Bitcoin", "Ethereum", "Bitcoin Cash");
$array2 = array("BTC", "ETH", "BTC");
$array3 = array("10000", "3000", "6666");

//Multi Dimensional Array
$multi = array();
foreach($array1 as $key => $v) {
    $multi[] = [$array1[$key], $array2[$key], $array3[$key]];
}

file_put_contents('data/myfile.json', json_encode($multi));

产地：

[["Bitcoin","BTC","10000"],["Ethereum","ETH","3000"],["Bitcoin Cash","BTC","6666"]]

格式化：

[
    [
        "Bitcoin",
        "BTC",
        "10000"
    ],
    [
        "Ethereum",
        "ETH",
        "3000"
    ],
    [
        "Bitcoin Cash",
        "BTC",
        "6666"
    ]
]

Answer 2

首先，您的预期结果无效json。它应该是数组{}而不是$array1 = array("Bitcoin", "Ethereum", "Bitcoin Cash"); $array2 = array("BTC", "ETH", "BTC"); $array3 = array("10000", "3000", "6666"); $new = []; // Restructure your array to get one item from each array foreach ($array1 as $index => $value) { $new[] = [ $value, $array2[$index], $array3[$index] ]; } $multi = json_encode($new);。

以下是如何根据需要格式化数据的方法但是，它假定三个数组的长度始终相等：

[
    [
        "Bitcoin",
        "BTC",
        "10000"
    ],
    [
        "Ethereum",
        "ETH",
        "3000"
    ],
    [
        "Bitcoin Cash",
        "BTC",
        "6666"
    ]
]

这将产生您想要的格式，但是采用有效的json格式：

    Stripe.apiKey = stripeApiKey;

    Customer customer = Customer.retrieve(customerId);

    Map<String, Object> cardParams = new HashMap<String, Object>();
    cardParams.put("number", "4242424242424242");
    cardParams.put("exp_month", "12");
    cardParams.put("exp_year", "2018");
    cardParams.put("cvc", "314");

    Map<String, Object> tokenParams = new HashMap<String, Object>();
    tokenParams.put("card", cardParams);
    Token cardToken = Token.create(tokenParams);

    Map<String, Object> sourceParams = new HashMap<String, Object>();
    sourceParams.put("source", cardToken.getId()); //?
    Card source = (Card) customer.getSources().create(sourceParams);
    logger.info("Card created: " + source.toString());

演示：https://3v4l.org/39kuA

从多维数组中创建json文件

2 个答案: