How can the character set be properly set in a PHP script to ensure correct display of special characters?

Special characters may not display correctly in a PHP script if the character set is not properly set. To ensure correct display, you can set the character set using the header() function with the Content-Type parameter. By specifying the character set, you can ensure that special characters are displayed accurately.

<?php
header('Content-Type: text/html; charset=utf-8');
?>