Why output array is not in correct order

PHP

i have this code in code snippet

my output code $data1 = "{$datas} | {$datas1}";
print_r( $data1);

in my output get amount i suppose to get 6 item display on the screen.
dont know why i only get one item display on the screen

the item here i refered is the ouput select data that i call by the condition of  1234,6545,5468,9856,"no stock",4561,5466
why only one item return to my screen?


function GetAmount()
{
$ItemID = array(1234,6545,5468,9856,"no stock",4561,5466);
$arrayElement[3] = "no stock";
$supermarketID = 21;
 
 $i = 0;
 $j = 0;
 
 for ($j = 0; $j < sizeof($ItemID); $j++)
  {
 if (($ItemID[$j] != $arrayElement[3])
      {
       $query = "SELECT getitem_std_amount( \"$supermarketID\",  \"ItemID[$j]\") AS AMOUNT";
     
       $result = mysql_query($query);
     if(!$result) die("Query didn't work. " . mysql_error());
   
       while($row = mysql_fetch_array($result))
            {
          $this->GetAmountReturn[$i++] .= '"'.$row['AMOUNT'].'"';
          $i++;
            }       
         }  
      else
    {
      $this->GetAmountReturn[$i++] .=  "\"no stock\" |";
          $i++;
      }
   }
 
 
function joinSUPERMARKETNAMEnAMOUNT()
{
//SUPERMARKETNAME select value is from another function
 
 foreach(($this->GetSupermarketReturn_value as $datas)
      {
    foreach($this->GetAmountReturn as $datas1)
       {
           $data1 = "{$datas} | {$datas1}  ";
         print_r( $data1);
       }
        }  
}