How important is it to customize the template system when developing a PHP-based CMS, and what are the implications of using a pre-existing template engine like Smarty?

It is important to customize the template system when developing a PHP-based CMS to ensure flexibility and maintainability. Using a pre-existing template engine like Smarty can save time and effort in creating and managing templates, but it may limit customization options and require additional learning curve for developers.

// Example of using Smarty template engine in a PHP-based CMS
require_once('smarty/Smarty.class.php');

$smarty = new Smarty;
$smarty->template_dir = 'templates';
$smarty->compile_dir = 'templates_c';
$smarty->cache_dir = 'cache';

// Assign variables to the template
$smarty->assign('title', 'Welcome to our CMS');
$smarty->assign('content', 'This is the homepage content');

// Display the template
$smarty->display('index.tpl');