ทำอย่างไรให้โค้ด php สะอาด โดยที่แยกระหว่างโค้ด html กับ php อ่ะคับ

include('Smarty.class.php');

// create object
$smarty = new Smarty;

// assign an array of data
$smarty->assign('name', array('bob','jim','joe','jerry','fred'));

// assign an associative array of data
$smarty->assign('users', array(
	array('name' => 'bob', 'phone' => '555-3425'),
	array('name' => 'jim', 'phone' => '555-4364'),
	array('name' => 'joe', 'phone' => '555-3422'),
	array('name' => 'jerry', 'phone' => '555-4973'),
	array('name' => 'fred', 'phone' => '555-3235')
	));


// display it
$smarty->display('index.tpl');

<table>
{section name=mysec loop=$name}
{strip}
   <tr bgcolor="{cycle values="#eeeeee,#dddddd"}">
      <td>{$name[mysec]}</td>
   </tr>
{/strip}
{/section}
</table>

<table>
{section name=mysec loop=$users}
{strip}
   <tr bgcolor="{cycle values="#aaaaaa,#bbbbbb"}">
      <td>{$users[mysec].name}</td>
      <td>{$users[mysec].phone}</td>
   </tr>
{/strip}
{/section}
</table>