oop - PHP recursively turning an ArrayObject to an Associative Array -

hey guys have method supposed call , recursively turn arrayobject associative array, unfortunately i'm getting fatal error

php fatal error:  call undefined method arrayobject::toarray() 

here's method

/**  * take arrayobject , recursively turn array  *   * @param bool $recursion  *   * @return array  */ public function toarray($recursion = false)  {     // in case object might multidimensional     if (true === $this->object) return $this->object->getarraycopy();      return array_map( function($item)     {         return is_object($item) ? $item->toarray(true) : $item;      }, $this->object->getarraycopy() ); } 

and here's sample arrayobject

arrayobject object (     [storage:arrayobject:private] => array         (             [profile] => arrayobject object                 (                     [storage:arrayobject:private] => array                         (                             [list] => arrayobject object                                 (                                     [storage:arrayobject:private] => array                                         (                                             [location] =>                                              [network_name] =>                                              [interests] =>                                              [last_name] =>                                              [url] =>                                              [significant_other] =>                                              [network_domains] =>                                              [contact] => arrayobject object                                                 (                                                     [storage:arrayobject:private] => array                                                         (                                                             [im] => arrayobject object                                                                 (                                                                     [storage:arrayobject:private] => array                                                                         (                                                                             [provider] =>                                                                          )                                                                  )                                                              [email_addresses] =>                                                          )                                                  )                                          )                                  )                          )                  )              [messages] => arrayobject object                 (                     [storage:arrayobject:private] => array                         (                             [list] => array                                 (                                     [0] => foo                                     [1] => bar                                     [2] => baz                                 )                          )                  )              [groups] => arrayobject object                 (                     [storage:arrayobject:private] => array                         (                         )                  )              [users] => arrayobject object                 (                     [storage:arrayobject:private] => array                         (                         )                  )          )  ) 

this works correctly, passing $this variable don't need worry colliding $this->object or scope issues.

/**  * public wrapper protected getarray()  *   * @return arrau  */ public function toarray() {     return $this->getarray($this->object); }  /**  * take arrayobject , turn associative array  *   * @param arrayobject $obj  *   * @return array  */ protected function getarray($obj)  {     $array  = array(); // noisy $array not exist     $arrobj = is_object($obj) ? get_object_vars($obj) : $obj;     foreach ($arrobj $key => $val) {             $val = (is_array($val) || is_object($val)) ? $this->getarray($val) : $val;             $array[$key] = $val;     }     return $array; }