Sum column values from multiple arrays

$array = array(); // hungarian notation
$array[] = array(5, 10, 15, 20, 25, 30);
$array[] = array(1, 2, 3, 4, 5, 6);
$array[] = array(2, 6, 8, 10, 12, 14);

Array
(
[0] => Array
    (
        [0] => 5
        [1] => 10
        [2] => 15
        [3] => 20
        [4] => 25
        [5] => 30
    )

[1] => Array
    (
        [0] => 1
        [1] => 2
        [2] => 3
        [3] => 4
        [4] => 5
        [5] => 6
    )

[2] => Array
    (
        [0] => 2
        [1] => 6
        [2] => 8
        [3] => 10
        [4] => 12
        [5] => 14
    )
)

$sumArray = array();
$arrayCount = count($array);
$elementCount = 0;

foreach($array as $subarray)
{
    $count = count($subarray);
    $elementCount = $elementCount < $count ? $count : $elementCount;
}

for($i = 0; $i < $elementCount; $i++)
{
    $sumArray[$i] = 0;

    for($j = 0; $j < $arrayCount; $j++)
    {
        $sumArray[$i] += $array[$j][$i];
    }
}

print_r($sumArray);

Array
(
    [0] => 8
    [1] => 18
    [2] => 26
    [3] => 34
    [4] => 42
    [5] => 50
)

$array = array(); // hungarian notation
$array[] = array(5, 10, 15, 20, 25);
$array[] = array(1, 2, 3, 4, 5, 6);
$array[] = array(2, 6, 8, 10);

Array
(
    [0] => 8
    [1] => 18
    [2] => 26
    [3] => 34
    [4] => 30
    [5] => 6
)

 $loopThrice = 3;
 $getSum = 0;
 $total = array();

 $array0 = array(5, 10, 15, 20, 25, 30);
 $array1 = array(1, 2, 3, 4, 5, 6);
 $array2 = array(2, 6, 8, 10, 12, 14);
 // find which arrray has the most values
 for($a=0; $a < $loopThrice; $a++){
     $max_index = (count(${'array'.$a}) > $max_index ? count(${'array'.$a}) : $max_index);
 }

 for($i=0; $i < $max_index; $i++){
      for($a=0; $a < $loopThrice; $a++){
           $total[$i] += ${'array'.$a}[$i];
     }
 }

 print_r($total);
 // prints Array ( [0] => 8 [1] => 18 [2] => 26 [3] => 34 [4] => 42 [5] => 50 ) 

$array0 = array(5, 10, 15, 20, 25, 30);
$array1 = array(1, 2, 3, 4, 5, 6);
$array2 = array(2, 6, 8, 10, 12, 14);

$var_prefix = 'array';
$arr_count = 0;
$max_fields = 0;

while(isset(${$var_prefix.$arr_count})) {
    $data[] = ${$var_prefix.$arr_count};
    if(count(${$var_prefix.$arr_count})>$max_fields) {
        $max_fields = count(${$var_prefix.$arr_count});
    };

    $arr_count++;
}

for($i=0; $i<$max_fields; $i++) {
    $result[$i] = array_sum(array_column($data, $i));
}

echo '<pre>';
print_r($result);
echo '</pre>';
die();

var_export(
    array_map(fn() => array_sum(func_get_args()), $array0, $array1, $array2)
);

var_export(
    array_map(fn(...$cols) => array_sum($cols), $array0, $array1, $array2)
);

array (
  0 => 8,
  1 => 18,
  2 => 26,
  3 => 34,
  4 => 42,
  5 => 50,
)