Convert a PHP object to an associative array

Question

I m integrating an API to my website which works with data stored in objects while my code is written using arrays   I d like a quick-and-dirty function to convert an object to an array

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Here is some code   function object to array  data        if     is array  data   and    is object  data            return  xxx       data        result   array          data    array   data      foreach   data as  key   gt   value            if  is object  value                value    array   value          if  is array  value                result  key    object to array  value           else              result  key     value            return  result

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Also you can use The Symfony Serializer Component    use Symfony Component Serializer Encoder JsonEncoder  use Symfony Component Serializer Normalizer ObjectNormalizer  use Symfony Component Serializer Serializer    serializer   new Serializer  new ObjectNormalizer      new JsonEncoder       array   json decode  serializer- gt serialize  object   json    true

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You can easily use this function to get the result   function objetToArray  adminBar        reflector   new ReflectionObject  adminBar        nodes    reflector- gt getProperties         out           foreach   nodes as  node             nod    reflector- gt getProperty  node- gt getName              nod- gt setAccessible true            out  node- gt getName       nod- gt getValue  adminBar             return  out      Use PHP nbsp 5 or later

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All other answers posted here are only working with public attributes  Here is one solution that works with JavaBeans-like objects using reflection and getters   function entity2array  entity   recursionDepth   2         result   array         class   new ReflectionClass get class  entity        foreach   class- gt getMethods ReflectionMethod  IS PUBLIC  as  method             methodName    method- gt name          if  strpos  methodName   get       0  amp  amp  strlen  methodName   gt  3                 propertyName   lcfirst substr  methodName  3                 value    method- gt invoke  entity                if  is object  value                     if   recursionDepth  gt  0                         result  propertyName     this- gt entity2array  value   recursionDepth - 1                                     else                        result  propertyName               Stop recursion                                             else                    result  propertyName     value                                    return  result

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Converting and removing annoying stars    array    array   object  foreach  array as  key   gt   val         new array str replace            key      val      Probably  it will be cheaper than using reflections

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By using typecasting you can resolve your problem  Just add the following lines to your return object    arrObj   array yourReturnedObject     You can also add a new key and value pair to it by using    arrObj  key     value

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Use  function readObject  object         name   get class   object        name   str replace        quot      quot    name      Outcomment this line  if you don t use                                                  class namespaces approach in your project      raw    array  object        attributes   array        foreach   raw as  attr   gt   val             attributes preg replace      name               attr      val            return  attributes     It returns an array without special characters and class names

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class Test      const A   1      public  b    two       private  c   test  A       public function   toArray            return call user func  get object vars    this             my test   new Test    var dump  array  my test   var dump  my test- gt   toArray       Output  array 2          b    gt      string 3   two        Testc    gt      int 1    array 1          b    gt      string 3   two

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This answer is only the union of the different answers of this post  but it s the solution to convert a PHP object with public or private properties with simple values or arrays to an associative array     function object to array  obj        if  is object  obj            obj    array  this- gt dismount  obj       if  is array  obj              new   array            foreach   obj as  key   gt   val                 new  key     this- gt object to array  val                       else          new    obj      return  new     function dismount  object         reflectionClass   new  ReflectionClass get class  object         array   array        foreach   reflectionClass- gt getProperties   as  property             property- gt setAccessible true            array  property- gt getName       property- gt getValue  object            property- gt setAccessible false             return  array

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First of all  if you need an array from an object you probably should constitute the data as an array first  Think about it   Don t use a foreach statement or JSON transformations  If you re planning this  again you re working with a data structure  not with an object   If you really need it use an object-oriented approach to have a clean and maintainable code  For example   Object as array  class PersonArray implements  ArrayAccess   IteratorAggregate       public function   construct Person  person             this- gt person    person                        If you need all properties  use a transfer object   class PersonTransferObject       private  person       public function   construct Person  person             this- gt person    person             public function toArray             return                   name    gt   this- gt person- gt getName

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Just typecast it   array    array   yourObject    From Arrays      If an object is converted to an array  the result is an array whose elements are the object s properties  The keys are the member variable names  with a few notable exceptions  integer properties are unaccessible  private variables have the class name prepended to the variable name  protected variables have a     prepended to the variable name  These prepended values have null bytes on either side    Example  Simple Object   object   new StdClass   object- gt foo   1   object- gt bar   2   var dump   array   object      Output   array 2       foo    gt  int 1     bar    gt  int 2      Example  Complex Object  class Foo       private  foo      protected  bar      public  baz       public function   construct                  this- gt foo   1           this- gt bar   2           this- gt baz   new StdClass           var dump   array  new Foo      Output  with  0s edited in for clarity    array 3        0Foo 0foo    gt  int 1      0  0bar    gt  int 2     baz    gt  class stdClass 2  0         Output with var export instead of var dump   array            0     Foo      0     foo    gt  1           0            0     bar    gt  2     baz    gt    stdClass    set state array            Typecasting this way will not do deep casting of the object graph and you need to apply the null bytes  as explained in the manual quote  to access any non-public attributes  So this works best when casting StdClass objects or objects with only public properties  For quick and dirty  what you asked for  it s fine   Also see this in-depth blog post    Fast PHP Object to Array conversion

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What about get object vars  obj   It seems useful if you only want to access the public properties of an object   See get object vars

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Menu   new Admin Model DbTable Menu      row    Menu- gt fetchRow  Menu- gt select  - gt where  id        id     Addmenu   new Admin Form Addmenu      Addmenu- gt populate  row- gt toArray

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You might want to do this when you obtain data as objects from databases      Suppose  result  is the end product from some query  query   result    mysqli- gt query  query    result   db result to array  result    function db result to array  result         res array   array         for   count 0   row    result- gt fetch assoc     count             res array  count     row       return  res array

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To convert an object into array just cast it explicitly    name of array    array   name of object

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Custom function to convert stdClass to an array   function objectToArray  d        if  is object  d                Gets the properties of the given object            with get object vars function          d   get object vars  d              if  is array  d                          Return array converted to object           Using   FUNCTION    Magic constant            for recursive call                    return array map   FUNCTION     d         else              Return array         return  d            Another custom function to convert Array to stdClass   function arrayToObject  d        if  is array  d                          Return array converted to object           Using   FUNCTION    Magic constant            for recursive call                    return  object  array map   FUNCTION     d         else              Return object         return  d            Usage Example      Create new stdClass Object  init   new stdClass      Add some test data  init- gt foo    Test data    init- gt bar   new stdClass   init- gt bar- gt baaz    Testing    init- gt bar- gt fooz   new stdClass   init- gt bar- gt fooz- gt baz    Testing again    init- gt foox    Just test       Convert array to object and then object back to array  array   objectToArray  init    object   arrayToObject  array       Print objects and array print r  init   echo   n   print r  array   echo   n   print r  object

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For your case it was right beautiful if you would use the  decorator  or  date model transformation  patterns  For example   Your model  class Car            var int        private  color            var string        private  model            var string        private  type                   return int             public function getColor    int               return  this- gt color                         param int  color         return Car             public function setColor int  color   Car                this- gt color    color          return  this                         return string             public function getModel    string               return  this- gt model                         param string  model         return Car             public function setModel string  model   Car                this- gt model    model           return  this                         return string             public function getType    string               return  this- gt type                         param string  type         return Car             public function setType string  type   Car                this- gt type    type           return  this            Decorator  class CarArrayDecorator            var Car        private  car                  CarArrayDecorator constructor          param Car  car             public function   construct Car  car                 this- gt car    car                         return array             public function getArray    array               return                color    gt   this- gt car- gt getColor                 type    gt   this- gt car- gt getType                 model    gt   this- gt car- gt getModel                         Usage   car   new Car     car- gt setType  type      car- gt setModel  model 1     car- gt setColor 255     carDecorator   new CarArrayDecorator  car    carResponseData    carDecorator- gt getArray      So it will be more beautiful and more correct code

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From the first Google hit for  PHP object to assoc array  we have this   function object to array  data        if  is array  data     is object  data                  result   array            foreach   data as  key   gt   value                         result  key    object to array  value                     return  result            return  data      The source is at codesnippets joyent com

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For the purpose of Unit Testig  I would recommend using json decode json encode  object   true  instead  Because if you try to use  array   obj for a complex object such as the one below  unit testing will fail  Consider the following test case   Hope this helps someone

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Here is my recursive PHP function to convert PHP objects to an associative array      ---------------------------------------------------------    ----- object to array recursive --- function  PHP  ------    ---------------------------------------------------------    --- arg1  --  object     PHP Object         - required --    --- arg2  --  assoc      TRUE or FALSE      - optional --    --- arg3  --  empty          Empty String   - optional --    ---------------------------------------------------------    ----- Return  Array from Object ---  associative  -------    ---------------------------------------------------------  function object to array recursive  object   assoc TRUE   empty            res arr   array         if   empty  object               arrObj   is object  object    get object vars  object     object            i 0          foreach   arrObj as  key   gt   val                 akey     assoc     FALSE     key    i              if  is array  val     is object  val                      res arr  akey     empty  val      empty   object to array recursive  val                             else                    res arr  akey     empty  val      empty    string  val                             i                        return  res arr        ---------------------------------------------------------    ---------------------------------------------------------   Usage example      ---- Return associative array from object      use   new arr1   object to array recursive  my object      -- or --     new arr1   object to array recursive  my object  TRUE      -- or --     new arr1   object to array recursive  my object  1        ---- Return numeric array from object      use   new arr2   object to array recursive  my object  FALSE

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Some impovements to the  well-knwon  code       mixed Obj2Array mixed Obj                                           static public function Obj2Array   Obj        if  is object   Obj             Obj   get object vars   Obj       return is array   Obj    array map   METHOD      Obj      Obj           BW Conv  Obj2Array   Notice that if the function is member of a class  like above  you must change   FUNCTION   to   METHOD

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There s my proposal  if you have objects in objects with even private members   public function dismount  object         reflectionClass   new  ReflectionClass get class  object         array   array        foreach   reflectionClass- gt getProperties   as  property             property- gt setAccessible true           if  is object  property- gt getValue  object                   array  property- gt getName       this- gt dismount  property- gt getValue  object              else                array  property- gt getName       property- gt getValue  object                      property- gt setAccessible false             return  array

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Short solution of  SpYk3HH  function objectToArray  o         a   array        foreach   o as  k   gt   v           a  k     is array  v     is object  v     objectToArray  v    v       return  a

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I think it is a nice idea to use traits to store object-to-array converting logic  A simple example   trait ArrayAwareTrait                  Return list of Entity s parameters         return array             public function toArray                  props   array flip  this- gt getPropertiesList             return array map              function   item                    if   item instanceof  DateTime                        return  item- gt format DATE ATOM                                     return  item                             array filter get object vars  this   function   key  use   props                    return array key exists  key   props                  ARRAY FILTER USE KEY                                     return array             protected function getPropertiesList                 if  method exists  this     sleep                  return  this- gt   sleep                      if  defined  static  PROPERTIES                  return static  PROPERTIES                    return              class OrderResponse       use ArrayAwareTrait       const PROP ORDER ID    orderId       const PROP TITLE    title       const PROP QUANTITY    quantity       const PROP BUYER USERNAME    buyerUsername       const PROP COST VALUE    costValue       const PROP ADDRESS    address        private  orderId      private  title      private  quantity      private  buyerUsername      private  costValue      private  address                   param  orderId         param  title         param  quantity         param  buyerUsername         param  costValue         param  address             public function   construct           orderId           title           quantity           buyerUsername           costValue           address                  this- gt orderId    orderId           this- gt title    title           this- gt quantity    quantity           this- gt buyerUsername    buyerUsername           this- gt costValue    costValue           this- gt address    address                         inheritDoc             public function   sleep                 return               static  PROP ORDER ID              static  PROP TITLE              static  PROP QUANTITY              static  PROP BUYER USERNAME              static  PROP COST VALUE              static  PROP ADDRESS                                    return mixed             public function getOrderId                 return  this- gt orderId                         return mixed             public function getTitle                 return  this- gt title                         return mixed             public function getQuantity                 return  this- gt quantity                         return mixed             public function getBuyerUsername                 return  this- gt buyerUsername                         return mixed             public function getCostValue                 return  this- gt costValue                         return string             public function getAddress                 return  this- gt address            orderResponse   new OrderResponse       var dump  orderResponse- gt toArray

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You can also create a function in PHP to convert an object array   function object to array  object        return  array   object

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Not a new solution but includes toArray method conversion when available  function objectToArray  r      if  is object  r         if  method exists  r   toArray            return  r- gt toArray       returns result directly       else          r   get object vars  r                if  is array  r          r   array map   FUNCTION     r      recursive function call        return  r

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Type cast your object to an array    arr     array   Obj    It will solve your problem

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Here I ve made an objectToArray   method  which also works with recursive objects  like when  objectA contains  objectB which points again to  objectA   Additionally I ve restricted the output to public properties using ReflectionClass  Get rid of it  if you don t need it                  Converts given object to array  recursively         Just outputs public properties                 param object array  object         return array string             protected function objectToArray  object            if  in array  object   this- gt usedObjects  TRUE                 return    recursive                       if  is array  object     is object  object                 if  is object  object                      this- gt usedObjects      object                             result   array                 reflectorClass   new  ReflectionClass get class  this                foreach   object as  key   gt   value                    if   reflectorClass- gt hasProperty  key   amp  amp   reflectorClass- gt getProperty  key - gt isPublic                           result  key     this- gt objectToArray  value                                               return  result                    return  object          To identify already used objects  I am using a protected property in this  abstract  class  named  this- gt usedObjects  If a recursive nested object is found  it will be replaced by the string   recursive    Otherwise it would fail in because of infinite loop

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Since a lot of people find this question because of having trouble with dynamically access attributes of an object  I will just point out that you can do this in PHP   valueRow- gt   valueName    In context  removed HTML output for readability     valueRows   json decode              Rows of unordered values decoded from a JSON object  foreach   valueRows as  valueRow         foreach   references as  reference             if  isset  valueRow- gt   reference- gt valueName                   tableHtml     valueRow- gt   reference- gt valueName                     else                tableHtml      amp nbsp

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If your object properties are public you can do    array     array   object    If they are private or protected  they will have weird key names on the array  So  in this case you will need the following function   function dismount  object         reflectionClass   new ReflectionClass get class  object         array   array        foreach   reflectionClass- gt getProperties   as  property             property- gt setAccessible true            array  property- gt getName       property- gt getValue  object            property- gt setAccessible false             return  array

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You can quickly convert deeply nested objects to associative arrays by relying on the behavior of the JSON encode decode functions    array   json decode json encode  nested object   true

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I use this  needed recursive solution with proper keys                   This method returns the array corresponding to an object  including non public members                If the deep flag is true  is will operate recursively  otherwise  if false  just at the first level                 param object  obj         param bool  deep   true         return array         throws  Exception             public static function objectToArray object  obj  bool  deep   true                 reflectionClass   new  ReflectionClass get class  obj             array               foreach   reflectionClass- gt getProperties   as  property                 property- gt setAccessible true                val    property- gt getValue  obj               if  true      deep  amp  amp  is object  val                      val   self  objectToArray  val                              array  property- gt getName       val               property- gt setAccessible false                     return  array          Example of usage  the following code   class AA      public  bb   null      protected  one   11      class BB      protected  two   22       a   new AA     b   new BB     a- gt bb    b   var dump  a    Will print this   array 2        bb     gt  array 1          two     gt  int 22          one     gt  int 11

[php] Convert a PHP object to an associative array

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