<?php
 echo "<table style='border: solid 1px black;'>";
 echo "<tr><th>customer id </th><th>Description</th><th>Grade</th>
 <th>Qty</th><th>price</th><th>Tax amount</th></tr>";
 class TableRows extends RecursiveIteratorIterator {
 function __construct($it) {
    parent::__construct($it, self::LEAVES_ONLY);
   }
   function current() {
    return "<td style='width:150px;border:1px solid black;'>" .
 parent::current(). "</td>";
   }
   function beginChildren() {
      echo "<tr>";
   }
   function endChildren() {
      echo "</tr>" . "n";
    }
  }
 $servername = "localhost";
 $username = "root";
 $password = "";
 $dbname = "datatest";
 try {
 $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username,
 $password);
 $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 $stmt = $conn->prepare("SELECT product_customer,description,grade,qty,price, FROM
 data_table LIMIT 20");
 $stmt->execute();
  // set the resulting array to associative
 $result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
 foreach(new TableRows(new RecursiveArrayIterator($stmt->fetchAll())) as
 $k=>$v) {
     echo $v;
    }
   }
  catch(PDOException $e) {
  echo "Error: " . $e->getMessage();
    }
   $conn = null;
    echo "</table>";
      ?>