PHP 將中文字寫入Mariadb時出亂碼

PHP 將中文字寫入Mariadb出亂碼,明明個database set咗utf8,php.ini都係set咗utf8,但係一存入database就出亂碼,google咗好耐,原來要在code內再charset返個database, 即加入以下句子在connect咗database後:
mysqli_set_charset($connection,"utf8");