How to move an array into another? [duplicate] - php

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create array tree from array list [duplicate]
(9 answers)
Closed 9 years ago.
I have a multidimensional associative array "$nav_menus" looks like this:
Array
(
[0] => Array
(
[id] => 1
[menu_name] => Media
[parent_id] => 0
[submenus] => 1
)
[1] => Array
(
[id] => 2
[menu_name] => Movies
[parent_id] => 1
[submenus] => 1
)
[2] => Array
(
[id] => 3
[menu_name] => English Movies
[parent_id] => 2
[submenus] => 1
)
[3] => Array
(
[id] => 4
[menu_name] => Action
[parent_id] => 3
[submenus] => 1
)
)
What I'm trying to accomplish is to loop the array and whenever the value of the key ['parent_id'] doesn't equal 0 is to loop the array again and move this one into whatever menu the value of its ['id'] key equal that parent_id ... here is what I want $nav_menus to look like at the end
Array
(
[id] => 1
[menu_name] => Media
[parent_id] => 0
[submenus] => 1
[0] => Array
(
[id] => 2
[menu_name] => Movies
[parent_id] => 1
[submenus] => 1
[0] => Array
(
[id] => 3
[menu_name] =>English Movies
[parent_id] => 2
[submenus] => 1
[0] => Array
(
[id] => 4
[menu_name] => Action
[parent_id] => 3
[submenus] => 1
)
)
)
)
Here is what I was tried to accomplish it, but with no luck:
foreach($nav_menus as $k => $v){
if($v['parent_id'] !== 0){
$x = $v;
foreach($nav_menus as $key => $value){
if($value['id'] == $v['parent_id']){
unset($v);
array_push($value, $x);
break;
}
}
}
}
print_r($nav_menus);
It gives me the same original array without any change :( ... Any suggestions ?

Answer 1

Try this recursive function.
function array_new($arr1,$tot_count,$parent=0,$new_arr=array(),$global_count=0)
{
$count=0;
foreach($arr1 as $arr_res)
{
if($arr_res['parent_id']==$parent)
{
$new_arr['id'] = $arr_res['id'];
$new_arr['menu_name'] = $arr_res['menu_name'];
$new_arr['parent_id'] = $arr_res['parent_id'];
$new_arr['submenus'] = $arr_res['submenus'];
//DebugBreak();
if($global_count<$tot_count-1)
{ $global_count++;
$new_arr[$count] = array_new($arr1,$tot_count,$arr_res['id'],$new_arr,$global_count);
$count++;
}
}
}
return $new_arr;
}
'$arr_unformated' is your array which you have now.
$tot_count = count($arr_unformated);
$arrnew = array_new($arr_unformated,$tot_count);
And '$arrnew' is your desire array.