json decode to array

Question

I am trying to decode a JSON string into an array but i get the following error      Fatal error  Cannot use object of type   stdClass as array in   C  wamp www temp asklaila php on line   6   Here is the code    lt  php  json string    http   www domain com jsondata json     jsondata   file get contents  json string    obj   json decode  jsondata   print r  obj  Result       gt

User · Answer

in PHP json decode convert json data into PHP associated array For Ex   php-array  json decode  json-data  true   print r  php-array

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Just in case you are working on php less then 5 2 you can use this resourse   http   techblog willshouse com 2009 06 12 using-json encode-and-json decode-in-php4   http   mike teczno com JSON JSON phps

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try this    json string    http   www domain com jsondata json    jsondata   file get contents  json string    obj   json decode  jsondata true   echo   lt pre gt    print r  obj

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Try like this    json string    https   example com jsondata json    jsondata   file get contents  json string    obj   json decode  jsondata   print r  obj- gt Result   foreach  obj- gt Result as  value     echo  value- gt id    change accordingly

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I hope this will help you   json ps      courseList                    course   1    course data1   Computer Systems Networks                     course   2    course data2   Audio and Music Technology                    course   3    course data3   MBA Digital Marketing                    Use Json decode function    json pss   json decode  json ps  true     Looping over JSON array in php  foreach  json pss  courseList   as  pss json         echo   lt br gt     course data1    pss json  course data1    exit        Result  Computer Systems Networks

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As per the documentation  you need to specify true as the second argument if you want an associative array instead of an object from json decode   This would be the code   result   json decode  jsondata  true    If you want integer keys instead of whatever the property names are   result   array values json decode  jsondata  true     However  with your current decode you just access it as an object  print r  obj- gt Result

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Please try this   lt  php  json string    http   www domain com jsondata json     jsondata   file get contents  json string    obj   json decode  jsondata  true   echo   lt pre gt    print r  obj  Result       gt

User · Answer

This will also change it into an array    lt  php     print r  array  json decode  object      gt

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According to the PHP Documentation json decode function has a parameter named assoc which convert the returned objects into associative arrays     mixed json decode   string  json    bool  assoc   FALSE       Since assoc parameter is FALSE by default  You have to set this value to TRUE in order to retrieve an array   Examine the below code for an example implication    json      a  1  b  2  c  3  d  4  e  5    var dump json decode  json    var dump json decode  json  true      which outputs   object stdClass  1  5          a     gt  int 1        b     gt  int 2        c     gt  int 3        d     gt  int 4        e     gt  int 5     array 5          a     gt  int 1        b     gt  int 2        c     gt  int 3        d     gt  int 4        e     gt  int 5

User · Answer

json decode  data  true      Returns data in array format   json decode  data      Returns collections    So  If want an array than you can pass the second argument as  true  in json decode function

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This is a late contribution  but there is a valid case for casting json decode with  array   Consider the following    jsondata        arr   json decode  jsondata  true   foreach   arr as  k  gt  v       echo  v     etc      If  jsondata is ever returned as an empty string  as in my experience it often is   json decode will return NULL  resulting in the error Warning  Invalid argument supplied for foreach   on line 3  You could add a line of if then code or a ternary operator  but IMO it s cleaner to simply change line 2 to       arr    array  json decode  jsondata true         unless you are json decodeing millions of large arrays at once  in which case as  TCB13 points out  performance could be negatively effected

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json decode support second argument  when it set to TRUE it will return an Array instead of stdClass Object  Check the Manual page of json decode function to see all the supported arguments and its details   For example try this     json string    http   www example com jsondata json    jsondata   file get contents  json string    obj   json decode  jsondata  TRUE      Set second argument as TRUE print r  obj  Result        Now this will works

[php] json_decode to array

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