Manipulating PHP arrays using references like JS objects -

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i manipulating array, shown below, in javascript.

http://ideone.com/vh43id

<?php  $root = array(     'nodes'=>array(         '1'=>array(             'id'=>'1',             'nodes'=>array(                 '4'=>array(                     'id'=>'4',                     'nodes'=>array(                         '5'=>array(                             'id'=>'5',                             'nodes'=>array()                         )                     )                 )             )         ),         '2'=>array(             'id'=>'2',             'nodes'=>array()         ),         '3'=>array(             'id'=>'3',             'nodes'=>array()         )     ) );  foreach ($root['nodes'] $_node_id => &$_root_node) {     $_put_parent = function (&$_node) use (&$_put_parent) {         foreach ($_node['nodes'] $_sub_node_id => &$_sub_node) {             $_put_parent($_sub_node);             $_sub_node['parent'] = $_node;         }     };      $_root_node['parent'] = null;     $_put_parent($_root_node); }  echo '<pre>'; var_dump($root['nodes']['1']['nodes']['4']); var_dump($root['nodes']['1']['nodes']['4']['nodes']['5']['parent']); echo '</pre>';  ?>

output:

array(3) {   ["id"]=>   string(1) "4"   ["nodes"]=>   &array(1) {     [5]=>     array(3) {       ["id"]=>       string(1) "5"       ["nodes"]=>       array(0) {       }       ["parent"]=>       array(2) {         ["id"]=>         string(1) "4"         ["nodes"]=>         *recursion*       }     }   }   ["parent"]=>   array(3) {     ["id"]=>     string(1) "1"     ["nodes"]=>     &array(1) {       [4]=>       *recursion*     }     ["parent"]=>     null   } } array(2) {   ["id"]=>   string(1) "4"   ["nodes"]=>   &array(1) {     [5]=>     array(3) {       ["id"]=>       string(1) "5"       ["nodes"]=>       array(0) {       }       ["parent"]=>       *recursion*     }   } }

$root['nodes']['1']['nodes']['4']['nodes']['5']['parent'] should point of $root['nodes']['1']['nodes']['4'] $root['nodes']['1']['nodes']['4']['nodes']['5']['parent'] have not got 'parent' reference.

i in javascript not understand problem php.

thank you.

i solved using arrayobjects.

http://ideone.com/j79wh6

<?php  $root = new arrayobject(array(     'nodes'=>new arrayobject(array(         '1'=>new arrayobject(array(             'id'=>'1',             'nodes'=>new arrayobject(array(                 '4'=>new arrayobject(array(                     'id'=>'4',                     'nodes'=>new arrayobject(array(                         '5'=>new arrayobject(array(                             'id'=>'5',                             'nodes'=>new arrayobject(array())                         ))                     ))                 ))             ))         )),         '2'=>array(             'id'=>'2',             'nodes'=>new arrayobject(array())         ),         '3'=>new arrayobject(array(             'id'=>'3',             'nodes'=>new arrayobject(array())         ))     )) ));  foreach ($root['nodes'] $_node_id => $_root_node) {     $_put_parent = function ($_node) use (&$_put_parent) {         foreach ($_node['nodes'] $_sub_node_id => $_sub_node) {             $_put_parent($_sub_node);             $_sub_node['parent'] = $_node;         }     };      $_root_node['parent'] = null;     $_put_parent($_root_node); }  echo '<pre>'; var_dump($root['nodes']['1']['nodes']['4']); var_dump($root['nodes']['1']['nodes']['4']['nodes']['5']['parent']); echo '</pre>';  ?>

output now:

object(arrayobject)[5]   public 'id' => string '4' (length=1)   public 'nodes' =>      object(arrayobject)[6]       public 5 =>          object(arrayobject)[7]           public 'id' => string '5' (length=1)           public 'nodes' =>              object(arrayobject)[8]               ...           public 'parent' =>              &object(arrayobject)[5]   public 'parent' =>      object(arrayobject)[3]       public 'id' => string '1' (length=1)       public 'nodes' =>          object(arrayobject)[4]           public 4 =>              &object(arrayobject)[5]       public 'parent' => null object(arrayobject)[5]   public 'id' => string '4' (length=1)   public 'nodes' =>      object(arrayobject)[6]       public 5 =>          object(arrayobject)[7]           public 'id' => string '5' (length=1)           public 'nodes' =>              object(arrayobject)[8]               ...           public 'parent' =>              &object(arrayobject)[5]   public 'parent' =>      object(arrayobject)[3]       public 'id' => string '1' (length=1)       public 'nodes' =>          object(arrayobject)[4]           public 4 =>              &object(arrayobject)[5]       public 'parent' => null

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