使用 PHP 读取 JSON 数据

Read JSON Data Using PHP

提问by Aadi

Solr returns response in following JSON format.

Solr 以以下 JSON 格式返回响应。

{
  "responseHeader":{
    "status":0,
    "QTime":2,
    "params":{
      "indent":"on",
      "start":"0",
      "q":"*:*",
      "wt":"json",
      "version":"2.2",
      "rows":"10"}},
  "response":{"numFound":3,"start":0,"docs":[
      {
        "student_id":"AB1001",
        "student_name":[
          "John"]
    },
      {
        "student_id":"AB1002",
        "student_name":[
          "Joe"]
    },
      {
        "student_id":"AB1003",
        "student_name":[
          "Lorem"]
    }]

  }}

What will be the simple way to read student_id, student_name using PHP?

使用 PHP 读取 student_id, student_name 的简单方法是什么？

回答by ThiefMaster

Use $obj = json_decode($yourJSONString);to convert it to an object.

使用$obj = json_decode($yourJSONString);将其转换为一个对象。

Then use foreach($obj->response->docs as $doc)to iterate over the "docs".

然后用于foreach($obj->response->docs as $doc)迭代“文档”。

You can then access the fields using $doc->student_idand $doc->student_name[0].

然后，您可以使用$doc->student_id和访问这些字段$doc->student_name[0]。

回答by honeyp0t

PHP has a json_decode function that will allow you to turn a JSON string into an array:

PHP 有一个 json_decode 函数，可以将 JSON 字符串转换为数组：

$array = json_decode($json_string, true);
$student_id = $array['response']['docs'][0]['student_id'];
...

Of course, you might want to iterate through the list of students instead of accessing index 0.

当然，您可能希望遍历学生列表而不是访问索引 0。

回答by deceze

$result = json_decode($result, true);
$result['response']['docs'][0]['student_id'] ...

回答by Mauricio Scheffer

Why not just use one of the PHP clients for Solr, or the PHP response writer? See http://wiki.apache.org/solr/SolPHP

为什么不只使用 Solr 的 PHP 客户端之一或 PHP 响应编写器？见http://wiki.apache.org/solr/SolPHP

回答by user3917016

$json_a = json_decode($string, TRUE);
$json_o = json_decode($string);


#array method
foreach($json_a['response']['docs'] as $students)
{
    echo $students['student_id']." name is ".$students['student_name'][0];
    echo "<br>";
}

#Object Method`enter code here`
foreach($json_o->response->docs as $sthudent_o)
{
    echo $sthudent_o->student_id. " name is ".$sthudent_o->student_name[0];
    echo "<br>";
}