Filing or balancing array with dynamic generated index and values - php

Question

Basically I want to balance an array.
The array I want to balance is retrieved from DB and can be unknown
Here is sample array retrieved from DB, it can vary
<?php
$arr_from_DB = array(
'1'=>NULL,
'2'=>1,
'3'=>1,
);
$node_width_from_DB = 3;
$node_depth_from_DB = 2;
?>
//Max Capacity was caclulated from $node_width_from_DB, $node_depth_from_DB AND WAS ALSO SAVED in DB , simulated below for width = 3 , depth = 2
$max_cap_of_array = 13;
//With $arr_from_DB fed to the display fxn on frontend, this is the result
//What I want to achieve, I want to transform $arr_from_DB to below ARray, All Array index with negative is seen to be dynamically generated
<?php
$formated_arr = array(
'1'=>NULL,
'2'=>1,
'3'=>1,
'-1'=>1,
'-2'=>2,
'-3'=>2,
'-4'=>2,
'-5'=>3,
'-6'=>3,
'-7'=>3,
'-8'=>-1,
'-9'=>-1,
'-10'=>-1,
);
?>
//With $formated_arr fed to the display fxn on frontend, this is the result
WHAT I TRIED SO FAR
<?php
$arr_filled = RECfillMissingDownlineArr($arr_from_DB);
var_dump($arr_filled);
function RECfillMissingDownlineArr($selectedArr, $pointer=1){
$node_width_from_DB = 3;
$node_depth_from_DB = 2;
//Max Capacity was caclulated from $node_width_from_DB, $node_depth_from_DB AND WAS ALSO SAVED in DB , simulated below for width = 3 , depth = 2
$max_cap_of_array = 13;
//var_dump($Allarr);
if($pointer>= $max_cap_of_array){
return $selectedArr;
}
$array_worked = array_count_values($selectedArr);
$array_worked3 = array_keys($selectedArr);
$array_worked2 = array_values($array_worked3);
//$key_p = $array_worked3[$pointer];
foreach($array_worked as $key=>$value){
//echo 'Value nm'.$value.'<br>';
if($value<$node_width_from_DB){
$key_p = $key;
break;
}
}
$array_worked1 = array_keys($selectedArr, $key_p);
for ($i=0; $i <$width ; $i++) {
if(empty($array_worked1[$i])){
$key_pointer = $pointer * -1;
$selectedArr[$key_pointer] = $key;
$pointer++;
return RECfillMissingDownlineArr($selectedArr,$pointer);
}
}
}
OUTPUT NULL, It's not what I want, it's returning null alltogether
?>