How can one ensure that PHP is running properly in the given code snippet?

To ensure that PHP is running properly in the given code snippet, one should check if the PHP tags are properly opened and closed, and if the PHP code is syntactically correct. Additionally, make sure that the server has PHP installed and enabled. One can also check for any error messages or logs that may indicate issues with PHP execution.

<?php
// Check if PHP is running properly
echo "Hello, PHP!";
?>