What are the best practices for handling server-side programming languages like PHP and ASP together?

When handling server-side programming languages like PHP and ASP together, it is essential to ensure compatibility between the two languages. One common approach is to use PHP as the primary server-side language and embed ASP code within PHP files using the PHP `exec()` function. This allows for seamless integration of ASP code within a PHP environment.

<?php
// Execute ASP code within PHP
$output = exec("cscript path/to/asp_script.asp");
echo $output;
?>