array_values recursive php

Question

Let's say I have an array like this:

Array
(
 [id] => 45
 [name] => john
 [children] => Array
 (
 [45] => Array
 (
 [id] => 45
 [name] => steph
 [children] => Array
 (
 [56] => Array
 (
 [id] => 56
 [name] => maria
 [children] => Array
 (
 [60] => Array
 (
 [id] => 60
 [name] => thomas
 )
 [61] => Array
 (
 [id] => 61
 [name] => michelle
 )
 )
 )
 [57] => Array
 (
 [id] => 57
 [name] => luis
 )
 )
 )
 )
)

What I'm trying to do is to reset the keys of the array with keys children to 0, 1, 2, 3, and so on, instead of 45, 56, or 57.

I tried something like:

function array_values_recursive($arr)
{
 foreach ($arr as $key => $value)
 {
 if(is_array($value))
 {
 $arr[$key] = array_values($value);
 $this->array_values_recursive($value);
 }
 }
 return $arr;
}

But that reset only the key of the first children array (the one with key 45)

• Nir Alfasi: why 'o why people are insisting on working with multiple-levels of nested arrays instead of using OOP ?
• gcochard: What did you pass into the function, the array or array[children]?
• user765368: I passed the array to the function

Answer 1

function array_values_recursive($arr)
{
 $arr2=[];
 foreach ($arr as $key => $value)
 {
 if(is_array($value))
 { 
 $arr2[] = array_values_recursive($value);
 }else{
 $arr2[] = $value;
 }
 }
 return $arr2;
}

this function that implement array_values_recursive from array like:

array( 
 'key1'=> 'value1', 
 'key2'=> array ( 
 'key2-1'=>'value-2-1',
 'key2-2'=>'value-2-2'
 )
);

to array like:

array(
 0 => 'value1',
 1 => array (
 0 =>'value-2-1',
 1 =>'value-2-2'
 )
);

• zoran404: you should explain your answer

Answer 2

You use a recursive approach but you do not assign the return value of the function call $this->array_values_recursive($value); anywhere. The first level works, as you modify $arr in the loop. Any further level does not work anymore for mentioned reasons.

If you want to keep your function, change it as follows (untested):

function array_values_recursive($arr)
{
 foreach ($arr as $key => $value)
 {
 if (is_array($value))
 {
 $arr[$key] = $this->array_values_recursive($value);
 }
 }
 if (isset($arr['children']))
 {
 $arr['children'] = array_values($arr['children']);
 }
 return $arr;
}

• user765368: The recursion works but all the keys in my array are changed to 0, 1, etc... (even the keys id and name). I only want the numeric keys in my array with index children to change
• Shi: I simply translated your words into PHP now.

Answer 3

This should do it:

function array_values_recursive($arr, $key)
{
 $arr2 = ($key == 'children') ? array_values($arr) : $arr;
 foreach ($arr2 as $key => &$value)
 {
 if(is_array($value))
 {
 $value = array_values_recursive($value, $key);
 }
 }
 return $arr2;
}

Answer 4

Try this ,

 function updateData($updateAry,$result = array()){
 foreach($updateAry as $key => $values){
 if(is_array($values) && count($values) > 0){
 $result[$key] = $this->_updateData($values,$values);
 }else{
 $result[$key] = 'here you can update values';
 }
 }
 return $result;
 }

Answer 5

You can used php fnc walk_array_recursive Here

• Chai T. Rex: Please explain how they'd use that to solve their problem.
• UselesssCat: I think walk_array_recursive does not walk over the tree, instead walks over leafs. So is unusable in this case.