What steps should be taken to ensure that the modified URL structure reflects correctly in PHP links and redirects?
When modifying the URL structure in PHP, it is important to update all links and redirects to reflect the changes accurately. To ensure this, you can use PHP's built-in functions like `str_replace` or `preg_replace` to update the URLs dynamically in your code.
// Example code snippet to update links and redirects with modified URL structure
$old_url = "http://example.com/old-page";
$new_url = str_replace("old-page", "new-page", $old_url);
header("Location: " . $new_url);
exit;