主从结构的JSON要怎么分拆

[helodd]

$a='{"head":{"id":"4","userno":"12345","username":"CDZ1"},"body":[{"orderno":"1","price":"15.00","qty":"1"},{"orderno":"1","price":"9.00","qty":"1"}]}';

这样的一段jsoin, 我要单独取得head 部分的字段值及body 部份的字段值， 比如取 head 部份的 userno,及 body 部份的 price.

[Lidisam]

用json_decode()就可以把json的数据格式转换 然后用数组的形式调用了

[xuzuning]

你 print_r(json_decode($a, 1)); 看一下，就知道该如何取得各分量了

[helodd]

引用 1 楼 xuzuning 的回复:

你 print_r(json_decode($a, 1)); 看一下，就知道该如何取得各分量了

返回这个， Array ( [head] => Array ( [id] => 4 [userno] => 13538750770 [username] => CDZ1 ) [body] => Array ( [0] => Array ( [orderno] => 1 [price] => 15.00 [qty] => 1 ) [1] => Array ( [orderno] => 1 [foodno] => 3 [price] => 9.00 [qty] => 1 ) ) ) Array ( [0] => orange [1] => banana [2] => apple [3] => raspberry ) 搞不定， 班主帮忙

[xuzuning]

从这样的数组中都不会取出想要的数据，你的老师该打屁股了

array (
  'head' =>   array (
    'id' => '4',
    'userno' => '12345',
    'username' => 'CDZ1',
  ),
  'body' =>   array (
    0 =>     array (
      'orderno' => '1',
      'price' => '15.00',
      'qty' => '1',
    ),
    1 =>     array (
      'orderno' => '1',
      'price' => '9.00',
      'qty' => '1',
    ),
  ),
)

[q81999008]

<?php 
@header("Content-type: text/html; charset=utf-8");
$a='{"head":{"id":"4","userno":"12345","username":"CDZ1"},"body":[{"orderno":"1","price":"15.00","qty":"1"},{"orderno":"1","price":"9.00","qty":"1"}]}';
$obj=json_decode($a);
echo 'userno:'.$obj->head->userno;
echo '<br/>price:'.$obj->body[0]->price;

/////或：

echo "<br/><br/><br/>";
$ary=json_decode($a,true);
echo 'userno:'.$ary['head']['userno'];
echo '<br/>price:'.$ary['body'][0]['price'];
?>