add <tr> after 4 <td> using php code example

Example: add after 4 using php

$return_var = "";
$index = 1;
while($value = mysqli_fetch_array($result))
{
  if($index == 1){
    $return_var .= "";
  }
  $return_var .= "";
  if($index % 4 === 0){
    $return_var .= "";
  }
  $index++;
}

$return_var .= "
Plan_name : ".$value["plan_name"]."
";