如何在php中解析json

Question

我在php中解析下面的json

{
  "responseHeader":{
    "status":0,
    "QTime":22,
    "params":{
      "fl":"title,id",
      "indent":"true",
      "q":"einstein",
      "hl.simple.pre":"<em>",
      "hl.simple.post":"</em>",
      "wt":"json",
      "hl":"true",
      "rows":"3"}},
  "response":{"numFound":63,"start":0,"docs":[
      {
        "id":"1",
        "title":"Albert Einstein"},
      {
        "id":"2088",
        "title":"Nationalism"},
      {
        "id":"1551",
        "title":"Dean Koontz"}]
  },
  "highlighting":{
    "1":{
      "text":[" for school exam September The Collected Papers of Albert <em>Einstein</em> Vol Doc s Unthinking for authority"]},
    "2088":{
      "text":[" in a letter to Alfred Kneser June Doc in The Collected Papers of Albert <em>Einstein</em> Vol Nationalism"]},
    "1551":{
      "text":[" changes since meeting Travis Did you get the leash on him yet <em>Einstein</em> Part Chapter Nora s query during"]}}}

使用json_decode並循環遍歷結果數組我可以獲得docs部分中的各個元素，

foreach ($myArray['response']['docs'] as $doc) {
        echo $doc['id'] . "<br/>";
        echo $doc['title'] . "<br/>";
    }

我現在試圖弄清楚從這個json的突出顯示部分獲取值。 我想在突出顯示部分中獲取文本字段並將其存儲在數組中。

"highlighting":{
    "1":{
      "text":[" for school exam September The Collected Papers of Albert <em>Einstein</em> Vol Doc s Unthinking for authority"]},
    "2088":{
      "text":[" in a letter to Alfred Kneser June Doc in The Collected Papers of Albert <em>Einstein</em> Vol Nationalism"]},
    "1551":{
      "text":[" changes since meeting Travis Did you get the leash on him yet <em>Einstein</em> Part Chapter Nora s query during"]}}}

數組應該是這樣的，

"1" => " for school exam September The Collected Papers of Albert <em>Einstein</em> Vol Doc s Unthinking for authority"

"2088" => " in a letter to Alfred Kneser June Doc in The Collected Papers of Albert <em>Einstein</em> Vol Nationalism"

怎么做到這一點？ 有沒有辦法將docs的id元素映射到突出顯示部分中指定的數字？

Answer 1

你可以試試這個（ 例子 ）

$myArray  = json_decode($json, true);
$highlighting = array();
foreach($myArray['highlighting'] as $key => $value)
{
    $highlighting[$key] = $value['text'][0];
}

結果：

Array (
    [1] =>  for school exam September...
    [2088] =>  in a letter to Alfred ...
    [1551] =>  changes since meeting ...
)