如何解碼php中的json

Question

這是我的json，

{
  "responseHeader":{
    "status":0,
    "QTime":15},
  "response":{"numFound":0,"start":0,"docs":[]
  },
  "spellcheck":{
    "suggestions":[
      "abert",{
        "numFound":10,
        "startOffset":0,
        "endOffset":5,
        "origFreq":0,
        "suggestion":[{
            "word":"albert",
            "freq":126},
          {
            "word":"aber t",
            "freq":317},
          {
            "word":"alert",
            "freq":58},
          {
            "word":"a bert",
            "freq":13},
          {
            "word":"abort",
            "freq":57},
          {
            "word":"a be rt",
            "freq":1045},
          {
            "word":"avert",
            "freq":37},
          {
            "word":"ab e rt",
            "freq":335},
          {
            "word":"aberr",
            "freq":21},
          {
            "word":"ab er t",
            "freq":317}]},
      "enstin",{
        "numFound":10,
        "startOffset":6,
        "endOffset":12,
        "origFreq":0,
        "suggestion":[{
            "word":"einstein",
            "freq":92},
          {
            "word":"ens tin",
            "freq":44},
          {
            "word":"enshrin",
            "freq":13},
          {
            "word":"en s tin",
            "freq":673},
          {
            "word":"enjoin",
            "freq":12},
          {
            "word":"e ns tin",
            "freq":335},
          {
            "word":"entwin",
            "freq":8},
          {
            "word":"ens t in",
            "freq":317},
          {
            "word":"epstein",
            "freq":8},
          {
            "word":"en st in",
            "freq":231}]},
      "correctlySpelled",false,
      "collation",[
        "collationQuery","albert einstein",
        "hits",154,
        "misspellingsAndCorrections",[
          "abert","albert",
          "enstin","einstein"]],
      "collation",[
        "collationQuery","(aber t) einstein",
        "hits",375,
        "misspellingsAndCorrections",[
          "abert","aber t",
          "enstin","einstein"]],
      "collation",[
        "collationQuery","albert (ens tin)",
        "hits",335,
        "misspellingsAndCorrections",[
          "abert","albert",
          "enstin","ens tin"]],
      "collation",[
        "collationQuery","albert enshrin",
        "hits",137,
        "misspellingsAndCorrections",[
          "abert","albert",
          "enstin","enshrin"]],
      "collation",[
        "collationQuery","alert einstein",
        "hits",139,
        "misspellingsAndCorrections",[
          "abert","alert",
          "enstin","einstein"]]]}}

我想獲得以下字段

"collation",[
        "collationQuery","albert einstein",
        "hits",154,
        "misspellingsAndCorrections",[
          "abert","albert",
          "enstin","einstein"]],

特別是'阿爾伯特愛因斯坦'。 我嘗試了以下代碼，但收到錯誤。

$myArray = json_decode($response, true);

foreach ($myArray['collation'] as $doc) {
echo $doc[0];
 }

Answer 1

這里有很多問題。

1. 排序規則不是JSON的根級字段。 responseHeader ， response ， spellcheck是根級字段。 其他一切都嵌套在它們之下。 print_r($myArray)執行json_decode解析的內容。
2. $myArray是一個對象，而不是一個數組。 像$myArray->response一樣訪問對象，而不是$myArray['response'] 。

3. 你所謂的“一個領域”不是一個領域。 json_encode將該數據的結構視為：

     [6] => collation [7] => Array ( [0] => collationQuery [1] => albert einstein [2] => hits [3] => 154 [4] => misspellingsAndCorrections [5] => Array ( [0] => abert [1] => albert [2] => enstin [3] => einstein ) ) 

如果這是您輸出JSON的代碼，那么您將需要更好地構建它。 如果這是別人的代碼，那就是他們的意思。