Ext7

rewrite ^/(?:(.*)/|)index\.(?:php|htm) /$1 permanent;
rewrite ^/(.*)\.(php|htm) /$1 permanent;
rewrite ^/(.*)/$ /$1 permanent;

rewrite ^/page/([^/]*)$ /page.php?param=$1;
rewrite ^/$ /index.php;

location ~ \.php$ {
    include fastcgi.conf;
    fastcgi_pass unix:/run/php/php7.2-fpm.sock;
}

location / {
    try_files $uri @extensionless-php;
}

location @extensionless-php {
    try_files $uri.php $uri/index.php =404;

    include fastcgi.conf;
    fastcgi_pass unix:/run/php/php7.2-fpm.sock;
}

error_page 404 /error;