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How can PHP developers handle links in included files when navigating between different directories within a project?

When including files in PHP that are located in different directories within a project, developers can use the `__DIR__` magic constant to dynamically generate links relative to the current file's directory. This ensures that links remain valid regardless of the file's location within the project structure.

php 
<?php
// Include file located in a different directory
include __DIR__ . '/path/to/another/file.php';

// Generate a link relative to the current file's directory
echo '<a href="' . __DIR__ . '/path/to/page.php">Link</a>';
?>

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