test 2

index2.php

<?php


function checkbus($family = 5, $member = [])
{
   if ($family == count($member)) {
      sort($member);
      $max_familily = 4;
      // echo "this is valid data";

      $random_bus = [];
      $max_bus = [];
      foreach ($member as $index => $currenly_member) {
         if ($currenly_member == $max_familily) {
            // echo "skip to next family <br>";
            array_push(
               $max_bus,
               $currenly_member
            );
            continue;
         } elseif ($currenly_member <= $max_familily) {
            // echo "sum currenly to next member <br>";
            array_push($random_bus, $currenly_member);
         }
      }

      $a = array_sum($random_bus) / 4;
      $b = count($max_bus);

      echo "Minimum bus required is : " . ceil($a + $b);
   } else {
      echo "Input must be equal with count of family";
   }
}

function main($keluarga, $mbr)
{
   // remove space
   $string = preg_replace('/\s+/', '', $mbr);
   $string = str_split($string);

   $string = array_map("intval", $string);
   checkbus($keluarga, $string);
}

$keluarga = 5;
$anggota = "1 2 4 3 3";
main($keluarga, $anggota);