What are the potential drawbacks of using pre-built template parsers like Smarty in PHP projects?

One potential drawback of using pre-built template parsers like Smarty in PHP projects is that they can add unnecessary complexity to the project, making it harder to maintain and debug. Additionally, relying on a third-party library for templating can introduce dependencies that may not be easily updated or compatible with future versions of PHP. To mitigate these drawbacks, consider using native PHP templating solutions or creating custom templates tailored to the project's specific needs.

// Example of using native PHP templating instead of a pre-built parser like Smarty

// Define a simple template using PHP syntax
$template = "<h1>Hello, <?php echo \$name; ?></h1>";

// Assign variables to be used in the template
$name = "John Doe";

// Evaluate the template and output the result
eval("?>".$template."<?php");