<?php  include("includes/db_config.php"); 
if(isset($_POST["tm_id"]))  
 {  
      $query = "SELECT itd.*,ikd.opening_stock,ikd.at_price_unit,ikd.item_date,ikd.min_stock_quatity,ikd.item_location FROM ah_item_details itd join ah_item_tracking_details ikd on itd.id=ikd.item_id  WHERE itd.id = '".$_POST["tm_id"]."'";  
      $result = mysqli_query($conn, $query);  
      $row = mysqli_fetch_array($result);  
      echo json_encode($row);  
     // echo json_encode($rows);  
 }  
 ?>