while($row= mysqli_fetch_assoc($results))
{
   $_email=$row["email"];
   echo  "<tr><td>". $row["email"] ."</td><td>" . $row["name"] .
   "</td><td>". $row["credit"] ."</td><td>".
   '<form method="post" action="user.php">
    <input type="hidden" name="data" value="<?php echo $_email?>"/>
    <button><b>Home<b></button>
    </form>'. "</td></tr>";
}