sorting array value without using built in php like sort() etc

Answer 1

Here is the best way of sorting. Also check response time.

 function findMaxVal($arr)
 {
  $maxNum = $arr[0];

  foreach($arr as $arval)
  {
   $maxNum = $maxNum < $arval ? $arval : $maxNum;
  }

  return $maxNum;
 }

 function sortArrFun($arr)
 {
  $maxVal = findMaxVal($arr);
  $countArr = array();

  for($i = 0; $i <= $maxVal; $i++)
  {
   $countArr[$i] = 0;
  } 

  for($i = 0; $i < count($arr); $i++)
  {
   $countArr[$arr[$i]]++;
  }

  $order = array();
  for($i = 0; $i < count($countArr); $i++)
  {
   for($j = 0; $j < $countArr[$i]; $j++)
   {
    $order[] = $i;
   }
  }

  return $order;
 }

 $arrr = [1,22,333,45,5,8888,9999,0,9,7,8]
 print_r(sortArrFun($arrr1));