不能在html文件中使用PHP代码

After i updated from PHP 5x to PHP 7, i have some issues, I have used all way below in my .htaccess

1/AddHandler application/x-httpd-php .htm .html
2/AddType application/x-httpd-php .php .html

And many different ways i've done in my .htaccess file but it still not working, i also tried to show PHP error, but it not show anything.

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

All the html tag display as well, but it cannot read PHP code