Question

我的PHP从Android应用程序

收到此字符串

[{"id":2,"category":"Food%2C%20Drinks%20%26%20Clothes","description":"Nasi%20Lemak%2C%20Teh%20Tarik%20","cost":"5","transactionDate":"2016-10-04"},{"id":3,"category":"Food%2C%20Drinks%20%26%20Clothes","description":"Rori%20Canai","cost":"3"}]

然后执行$data = json_decode($data,TRUE);

到上面的字符串，它变为：

Array
(
    [0] => Array
        (
            [id] => 2
            [category] => Food%2C%20Drinks%20%26%20Clothes
            [description] => Nasi%20Lemak%2C%20Teh%20Tarik%20
            [cost] => 5
        )

    [1] => Array
        (
            [id] => 3
            [category] => Food%2C%20Drinks%20%26%20Clothes
            [description] => Roti%20Canai
            [cost] => 3
        )

)

但我不知道如何阅读。这是我做的：

//I pass the data above into variable $data

$data = json_decode($data,TRUE);

for ($i = 0; $i < count($data); $i++){    
 echo "id: ".$data[$i]["id"]. ", desc: ".$data[$i]["description"]. ", cost: ".$data[$i]["cost"];
}

但它只输出A A A ......

*以上所有数据都已显示在<pre></pre>

中

Answer 1

将json保存到变量，例如$json，然后运行json_decode($json, true)并将其保存到变量，例如$array。现在你已经在数组中解码了json。之后，您可以使用foreach循环遍历数组。要删除一些%2C%...个字符，请在子数组的每个元素上运行urldecode。这是一个例子：

<?php

$json = '[{"id":2,"category":"Food%2C%20Drinks%20%26%20Clothes","description":"Nasi%20Lemak%2C%20Teh%20Tarik%20","cost":"5","transactionDate":"2016-10-04"},{"id":3,"category":"Food%2C%20Drinks%20%26%20Clothes","description":"Rori%20Canai","cost":"3"}]
';

$array = json_decode($json, true);

foreach($array as $subArray)
{
    echo urldecode($subArray['id']).'<br/>';
    echo urldecode($subArray['category']).'<br/>';
    echo urldecode($subArray['description']).'<br/>';
    echo urldecode($subArray['cost']).'<br/><br/>';
}

结果是：

2
Food, Drinks & Clothes
Nasi Lemak, Teh Tarik 
5

3
Food, Drinks & Clothes
Rori Canai
3

Answer 2

array_walk_recursive(json_decode($json, true), function(&$item, $key){
    $item = urldecode($item);
});

foreach ($array as $item) {
    ..
}

在php中读取此数组

2 个答案: