Copying a multi dimensional array of nodes into another array - php

Question

I am looking to convert a multi dimensional array into another multidimensional array using a recursive function.
Source array :
Array
(
[1] => Array
(
[id] => 1
[source_name] => kk56ca1d0f2378f
[company_id] => 1
[lft] => 1
[rgt] => 18
[parent_id] => 0
[children] => Array
(
[2] => Array
(
[id] => 2
[source_name] => kk56ca1d17f3f63
[company_id] => 1
[lft] => 2
[rgt] => 3
[parent_id] => 1
[children] => Array
(
)
)
[3] => Array
(
[id] => 3
[source_name] => kk56ca1d1ebe975
[company_id] => 1
[lft] => 4
[rgt] => 13
[parent_id] => 1
[children] => Array
(
[6] => Array
(
[id] => 6
[source_name] => kk56ca1fc882ac0
[company_id] => 1
[lft] => 5
[rgt] => 10
[parent_id] => 3
[children] => Array
(
)
)
)
)
)
)
)
which I need to get into the format of
Array
(
[0] => Array
(
[id] => 1
[text] => kk56ca1d0f2378f
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 2
[text] => kk56ca1d17f3f63
[parent_id] => 1
[nodes] => Array
(
)
)
[1] => Array
(
[id] => 3
[text] => kk56ca1d1ebe975
[parent_id] => 1
[nodes] => Array
(
[0] => Array
(
[id] => 6
[text] => kk56ca1fc882ac0
[parent_id] => 3
[nodes] => Array
(
)
)
[1] => Array
(
[id] => 15
[text] => kk
[parent_id] => 3
[nodes] => Array
(
)
)
)
)
)
)
)
I have been trying for hours and getting nowhere with this. Any help would be really appreciated.
The source array has associative indexes (though they are numbers) and the destination array has numerical indexes. Besides this, just need to remove a few indexes and change names of a few.
EDIT :
Specific changes :
change index name source_name to text
change index name children to nodes
unset indexes lft, rgt, company_id
I do not have much experience with recursion so I have trying fruitlessly.
This is what I could come up with :
// pass array of nodes
function convert_array($from){
// this is a node
if(isset($from['source_name']))
{
$temp = array();
$temp['id'] = $from['id'];
convert_array($from['children']);
}
// this is an array of nodes
else
{
foreach($from as $arr)
{
$ret = convert_array($arr);
print_r($ret);
}
}
}
But I am not able to understand what data to be returned and how the new array builds up from the return values.

Answer 1

Here the working function:
function convert_array( $array )
{
$retval = array();
foreach( $array as $row )
{
$child = array();
$child['id'] = $row['id'];
$child['text'] = $row['source_name'];
$child['parent_id'] = $row['parent_id'];
if( count( $row['children'] ) )
{ $child['nodes'] = convert_array( $row['children'] ); }
else
{ $child['nodes'] = array(); }
$retval[] = $child;
}
return $retval;
}
3v4l demo
I think it is self-explanatory, BTW: we init an empty array ($retval), then we perform a foreach loop through all array argument: for each element, we init a new array and we add it id, source_name as text and parent_id; if the children index has elements, we perform a recursive call to fill nodes array index, otherwise we set it to empty array.