Cannot use object of type stdClass as array

Question

I get a strange error using json decode    It decode correctly the data  I saw it using print r   but when I try to access to info inside the array I get   Fatal error  Cannot use object of type stdClass as array in C  Users Dail software abs php on line 108   I only tried to do   result  context   where  result has the data returned by json decode    How can I read values inside this array

User · Answer

As the Php Manual say      print r     Prints human-readable information about a variable   When we use json decode     we get an object of type stdClass as return type  The arguments  which are to be passed inside of print r   should either be an array or a string  Hence  we cannot pass an object inside of print r    I found 2 ways to deal with this     Cast the object to array  This can be achieved as follows    a    array  object   By accessing the key of the Object As mentioned earlier  when you use json decode    function  it returns an Object of stdClass  you can access the elements of the object with the help of - gt  Operator    value    object- gt key     One  can also use multiple keys to extract the sub elements incase if the object has nested arrays    value    object- gt key1- gt key2- gt key3       Their are other options to print r   as well  like var dump    and var export     P S   Also  If you set the second parameter of the json decode    to true  it will automatically convert the object to an array     Here are some references   http   php net manual en function print-r php http   php net manual en function var-dump php http   php net manual en function var-export php

User · Answer

When you try to access it as  result  context    you treating it as an array  the error it s telling you that you are actually dealing with an object  then you should access it as  result- gt context

User · Answer

You can convert stdClass object to array like     array    array  stdClass    stdClsss to array

User · Answer

Sometimes when working with API you simply want to keep an object an object  To access the object that has nested objects you could do the following   We will assume when you print r the object you might see this   print r  response    stdClass object        status    gt  success      message    gt  Some message from the data      0    gt  stdClass object                        first    gt  Robert              last    gt  Saylor              title    gt  Symfony Developer                1    gt  stdClass object                        country    gt  USA               To access the first part of the object   print  response- gt   status      And that would output  success   Now let s key the other parts    first    response- gt  0 - gt   first    print  First name    first  lt br gt      The expected output would be  Robert  with a line break   You can also re-assign part of the object to another object    contact    response- gt  0   print  First Name       contact- gt   first       lt br gt      The expected output would be  Robert  with a line break   To access the next key  1  the process is the same   print  Country       response- gt  1 - gt   country       lt br gt      The expected output would be  USA   Hopefully this will help you understand objects and why we want to keep an object an object  You should not need to convert an object to an array to access its properties

User · Answer

Have same problem today  solved like this   If you call json decode  somestring  you will get an Object and you need to access like  object- gt key   but if u call json decode  somestring  true  you will get an dictionary and can access like  array  key

User · Answer

I got this error out of the blue because my facebook login suddently stopped working  I had also changed hosts  and throwed this error  The fix is really easy  The issue was in this code     response    new FacebookRequest      FacebookSession  newAppSession  this- gt appId   this- gt appSecret        GET         oauth access token        params     - gt execute  - gt getResponse true      if  isset  response  access token              lt ---- this line gave error     return new FacebookSession  response  access token           Basically isset   function expect an array but instead it find an object  The simple solution is to convert PHP object to array using  array  quantifier  The following is the fixed code      response    array   new FacebookRequest      FacebookSession  newAppSession  this- gt appId   this- gt appSecret        GET         oauth access token        params     - gt execute  - gt getResponse true     Note the use off array   quantifier in first line

User · Answer

instead of using the brackets use the object operator for example my array based on database object is created like this in a class called DB   class DB   private static   instance   null  private   pdo            query             error   false            results            count   0     private function   construct         try           this- gt  pdo   new PDO  mysql host     Config  get  mysql host      dbname     Config  get  mysql db     Config  get  mysql username    Config  get  mysql password              catch PDOException  e             this- gt  error   true           newsMessage    Sorry   Database is off line            pagetitle    Teknikal Tim - Database Error            pagedescription    Teknikal Tim Database Error page           include once  dbdown html php           exit             headerinc    header html php      public static function getInstance         if  isset self    instance             self    instance   new DB               return self    instance           public function query  sql   params   array           this- gt  error   false      if  this- gt  query    this- gt  pdo- gt prepare  sql          x   1          if count  params             foreach  params as  param                this- gt  query- gt bindValue  x   param                x                                      if  this- gt  query- gt execute                this- gt  results    this- gt  query- gt fetchAll PDO  FETCH OBJ            this- gt  count    this- gt  query- gt rowCount                else           this- gt  error   true             return  this     public function action  action   table   where   array          if count  where     3             operators   array        gt      lt      gt       lt                field         where 0            operator      where 1            value         where 2            if in array  operator   operators                  sql      action  FROM   table  WHERE   field                     if   this- gt query  sql  array  value  - gt error                  return  this                                     return false         public function get  table   where        return  this- gt action  SELECT      table   where    public function results         return  this- gt  results     public function first         return  this- gt  results 0      public function count         return  this- gt  count         to access the information I use this code on the controller script    lt  php  pagetitle    Teknikal Tim - Service Call Reservation    pagedescription    Teknikal Tim Sevice Call Reservation Page   require once   SERVER  DOCUMENT ROOT      core init php    newsMessage    temp message     servicecallsdb   DB  getInstance  - gt get  tt service calls   array  UserID           SESSION  UserID       if   servicecallsdb        servicecalls     array  ID   gt     ServiceCallDescription   gt  No Service Calls      else    servicecalls    servicecallsdb- gt results      include  servicecalls html php        gt    then to display the information I check to see if servicecalls has been set and has a count greater than 0 remember it s not an array I am referencing so I access the records with the object operator  -   like this    lt  php include   SERVER  DOCUMENT ROOT      includes header html php    gt   lt  --Main content-- gt   lt div id  mainholder  gt   lt  -- div so that page footer can have a minum height from the   header -- gt   lt h1 gt  lt  php if isset  pagetitle   htmlout  pagetitle    gt  lt  h1 gt   lt br gt   lt br gt   lt article gt       lt h2 gt  lt  h2 gt   lt  article gt   lt  php if  isset  servicecalls     if  count   servicecalls   gt  0        foreach   servicecalls as  servicecall            echo   lt a href   servicecalls  servicecall     servicecall- gt ID     gt       servicecall- gt ServiceCallDescription    lt  a gt           else echo  No service Calls         gt   lt a href   servicecalls  new true  gt Raise New Service Call lt  a gt   lt  div gt   lt  -- Main content end-- gt   lt  php include   SERVER  DOCUMENT ROOT      includes footer html php     gt

User · Answer

Use true as the second parameter to json decode  This will decode the json into an associative array instead of stdObject instances    my array   json decode  my json  true     See the documentation for more details

User · Answer

It s not an array  it s an object of type stdClass   You can access it like this   echo  oResult- gt context    More info here  What is stdClass in PHP

User · Answer

You must access it using - gt  since its an object   Change your code from    result  context      To    result- gt context

User · Answer

Try something like this one  Instead of getting the context like  this works for getting array index s   result  context    try  this work for getting objects   result- gt context  Other Example is   if  result has multiple data values  Array        0    gt  stdClass Object                        id    gt  15              name    gt  1 Pc Meal              context    gt  5              restaurant id    gt  2              items    gt                details    gt  1 Thigh  or 2 Drums  along with Taters              nutrition fact    gt    quot  quot   quot  quot                servings    gt  menu              availability    gt  1              has discount    gt    quot menu quot  0               price    gt    quot menu quot   quot 8 03 quot                discounted price    gt    quot menu quot   quot  quot                thumbnail    gt  YPenWSkFZm2BrJT4637o jpg              slug    gt  1-pc-meal              created at    gt  1612290600              updated at    gt  1612463400               Then try this  foreach  result as  results           results- gt context

User · Answer

Use the second parameter of json decode to make it return an array    result   json decode  data  true

User · Answer

Change it for   results- gt fetch array

User · Answer

To get an array as result from a json string you should set second param as boolean true    result   json decode  json string  true    context    result  context      Otherwise  result will be an std object  but you can access values as object      result   json decode  json string     context    result- gt context

User · Answer

Here is the function signature   mixed json decode   string  json    bool  assoc   false    int  depth   512    int  options   0         When param is false  which is default  it will return an appropriate php type  You fetch the value of that type using object method paradigm   When param is true  it will return associative arrays   It will return NULL on error   If you want to fetch value through array  set assoc to true

User · Answer

The function json decode   returns an object by default   You can access the data like this   var dump  result- gt context     If you have identifiers like from-date  the hyphen would cause a PHP error when using the above method  you have to write   var dump  result- gt   from-date       If you want an array you can do something like this    result   json decode  json  true     Or cast the object to an array    result    array  json decode  json

[php] Cannot use object of type stdClass as array?

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