Php 检查json的计数

我有一些类似这样的json结果

array (
  'status' => 'sukses',
  'msg' => 'Resi Ada',
  'gen_info' => 
  array (
    'awb' => '030003437484',
    'service' => '',
    'date' => '21-07-2014 15:03:27',
    'shipper' => '',
    'shipper_city' => '',
    'receiver' => '',
    'receiver_city' => '',
    'receiver_address' => '',
  ),
  'manifest' => 
  array (
    0 => 
    array (
      'manifest_date' => '23-07-2014 17:00:00',
      'manifest_desc' => 'Received By : DEDY SASMITA',
    ),
    1 => 
    array (
      'manifest_date' => '23-07-2014 09:25:55',
      'manifest_desc' => 'Ongoing',
    ),
    2 => 
    array (
      'manifest_date' => '22-07-2014 18:10:08',
      'manifest_desc' => 'ARRIVED AT DESTINATION',
    ),
    3 => 
    array (
      'manifest_date' => '21-07-2014 18:14:56',
      'manifest_desc' => 'Ongoing',
    ),
    4 => 
    array (
      'manifest_date' => '21-07-2014 15:03:27',
      'manifest_desc' => 'DEPART AT TIKI',
    ),
  ),
)

count of json is: 4

echo count($data['manifest']);

我想知道这个json的数量，使用这个脚本

echo count($data);

$data是解码后json的结果

但是，为什么得到的结果与json文件中的计数数不匹配

这样的结果

array (
  'status' => 'sukses',
  'msg' => 'Resi Ada',
  'gen_info' => 
  array (
    'awb' => '030003437484',
    'service' => '',
    'date' => '21-07-2014 15:03:27',
    'shipper' => '',
    'shipper_city' => '',
    'receiver' => '',
    'receiver_city' => '',
    'receiver_address' => '',
  ),
  'manifest' => 
  array (
    0 => 
    array (
      'manifest_date' => '23-07-2014 17:00:00',
      'manifest_desc' => 'Received By : DEDY SASMITA',
    ),
    1 => 
    array (
      'manifest_date' => '23-07-2014 09:25:55',
      'manifest_desc' => 'Ongoing',
    ),
    2 => 
    array (
      'manifest_date' => '22-07-2014 18:10:08',
      'manifest_desc' => 'ARRIVED AT DESTINATION',
    ),
    3 => 
    array (
      'manifest_date' => '21-07-2014 18:14:56',
      'manifest_desc' => 'Ongoing',
    ),
    4 => 
    array (
      'manifest_date' => '21-07-2014 15:03:27',
      'manifest_desc' => 'DEPART AT TIKI',
    ),
  ),
)

count of json is: 4

echo count($data['manifest']);

“4”是此json的计数

但是，总数应该是“5”，对吗

计数是0、1、2、3和4，所以数字是5

---

如何修复此问题？

您正在检查外部数组，这就是为什么它将计数设为

4

，请使用下面的代码检查

清单的计数，如下所示

array (
  'status' => 'sukses',
  'msg' => 'Resi Ada',
  'gen_info' => 
  array (
    'awb' => '030003437484',
    'service' => '',
    'date' => '21-07-2014 15:03:27',
    'shipper' => '',
    'shipper_city' => '',
    'receiver' => '',
    'receiver_city' => '',
    'receiver_address' => '',
  ),
  'manifest' => 
  array (
    0 => 
    array (
      'manifest_date' => '23-07-2014 17:00:00',
      'manifest_desc' => 'Received By : DEDY SASMITA',
    ),
    1 => 
    array (
      'manifest_date' => '23-07-2014 09:25:55',
      'manifest_desc' => 'Ongoing',
    ),
    2 => 
    array (
      'manifest_date' => '22-07-2014 18:10:08',
      'manifest_desc' => 'ARRIVED AT DESTINATION',
    ),
    3 => 
    array (
      'manifest_date' => '21-07-2014 18:14:56',
      'manifest_desc' => 'Ongoing',
    ),
    4 => 
    array (
      'manifest_date' => '21-07-2014 15:03:27',
      'manifest_desc' => 'DEPART AT TIKI',
    ),
  ),
)

count of json is: 4

echo count($data['manifest']);

或者，如果您有对象，则使用

echo count($data->manifest);

检查此演示：
json的计数为4。其中只有四个要素：

状态、消息、gen_信息、清单

我想你是想清点舱单的数量。在这种情况下，只需使用

echo count($data->manifest) // If you have an object from json_decode
// Or
echo count($data['manifest']) // if you already converted it to an array.

它显示正确的输出，因为
$data
有4个元素（从1开始）。
如果你想清点清单，你可以这样做

echo计数（$data['manifest']）；//输出5
，因为您正在计算根数组的条目（状态、消息、gen_信息和清单）。要获得您期望的内容，您需要执行
count（$data->manifest）
或
count（$data['manifest'））
，具体取决于您是正常解码还是对数组进行解码