What are the implications of using UTF-8 encoding in PHP scripts and how can encoding-related display issues be addressed?

Using UTF-8 encoding in PHP scripts allows for the proper handling of characters from various languages and symbols. To address encoding-related display issues, make sure to set the appropriate UTF-8 encoding in your PHP script using header() function and also ensure that your database connection is set to UTF-8.

header('Content-Type: text/html; charset=utf-8');
mysqli_set_charset($conn, 'utf8');