How does changing from Latin1 to UTF8 affect PHP scripts that use Umlaut characters?

Changing from Latin1 to UTF8 can affect PHP scripts that use Umlaut characters because UTF8 supports a wider range of characters, including Umlauts, while Latin1 has limited character encoding capabilities. To solve this issue, you need to ensure that your PHP scripts are set to use UTF8 encoding to properly handle Umlaut characters.

// Set UTF8 encoding for PHP scripts
header('Content-Type: text/html; charset=utf-8');
mb_internal_encoding('UTF-8');