php - 如何在 PHP 中解析这个 JSON 数组？

Question

我一直在玩弄比特币 API，最后让它与我本地的 bitcoind 服务器交互。

现在下面的代码：

$bitcoin->listreceivedbyaccount();

打印以下内容：

Array
(
    [0] => Array
        (
            [account] => root213
            [amount] => 1
            [confirmations] => 3
        )

)

例如，我如何打印或使用 [account] 或 [amount]？

如果有人能帮助我或至少将我推向正确的方向，我将不胜感激，因为我此刻感到迷茫。

提前致谢。

Answer 1

$data = $bitcoin->listreceivedbyaccount();

$account = $data[0]['account'];
$amount = $data[0]['amount'];

Answer 2

$arrJSON = $bitcoin->listreceivedbyaccount();
foreach($arrJSON as $arr) {
    print($arr['account']);
    print($arr['amount']);           
}

Answer 3

/**
 *   Firstly collect the data 
 *   as an accessible variable
**/
$SomeVar = $bitcoin->listreceivedbyaccount();

/**
 *   Print the contents for just demonstration! 
 *   (Dont use print_r() in production!)
**/ 
print_r( $SomeVar );
Array
(
    [0] => Array
        (
            [account] => root213
            [amount] => 1
            [confirmations] => 3
        )

)

访问“帐户”

echo $SomeVar[0]["account"]; //echos root213

访问“金额”

echo $SomeVar[0]["amount"]; //echos 1

因此，从这里开始，您可以简单地将它们重新分配为它们自己的变量等 =)

Answer 4

如果您想使用多个值，这是一种方法：

$data = $bitcoin->listreceivedbyaccount();
$count = count($data);
// Avoid errors
$amounts = array();
// Avoid errors
$confirmations = array();
for ($i = 0; $i < $count; $i++) {
  $amounts[] = $data[$i]['amount'];
  $confirmations[] = $data[$i]['confirmations'];
}
foreach ($amounts as $amount) {
  // Do something, like:
  // print $amount;
}

Answer 5

这是我一直用于将非数组转换为数组的另一个选项：

/**
 * Convert a string, number, or object into an array.
 * Especially useful for objects such as those that
 * come from simplexml_load_file(), etc.
 *
 * @param mixed $non_array
 *   Any string, number, or object.
 *
 * @return
 *   An "arrayified" version of $non_array. At minimum,
 *   this should always return an empty array.
 */
function arrayify($non_array) {
  if (empty($non_array) && $non_array !== 0) {
    return array();
  }
  return unserialize(serialize(json_decode(json_encode((array) $non_array), 1)));
}

然后像这样使用它来提取 JSON 数据：

$data = arrayify($bitcoin->listreceivedbyaccount());
print_r($data);