What are some popular PHP template systems and their advantages and disadvantages?

Issue: When working with PHP, using a template system can help separate the presentation layer from the business logic, making the code more maintainable and easier to work with. Code snippet: 

// Example of using the popular Smarty template system
require_once('libs/Smarty.class.php');

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

$smarty->assign('name', 'John Doe');
$smarty->display('index.tpl');

Keywords

Smarty Twig Blade Mustache advantages

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