How can the correct path for a PHP file be determined when including it in an HTML page?

When including a PHP file in an HTML page, the correct path can be determined by using the `$_SERVER['DOCUMENT_ROOT']` variable to get the root directory of the server. This variable provides the full path to the document root directory, allowing you to construct the correct path to the PHP file relative to the root directory. 

<?php
include $_SERVER['DOCUMENT_ROOT'] . '/path/to/your/file.php';
?>

Keywords

PHP include path HTML file

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