How-to enable gzip support on Nginx Plesk12

Create /etc/nginx/conf.d/gzip.conf with the following:

vim /etc/nginx/conf.d/gzip.conf
gzip on;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
gzip_proxied any;
gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript image/x-icon image/bmp image/svg+xml;
gzip_vary on;

restart ngix service from Plesk or ssh
gzip_types to compress other file types can be obtained from /etc/nginx/mime.types

Enabling error display in php via htaccess only

Note:- When using PHP as an Apache module, you can also change the configuration settings using directives in Apache configuration files (e.g. httpd.conf) and .htaccess files. You will need “AllowOverride Options” or “AllowOverride All” privileges to do so.

Add following values to your .htaccess

php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on
php_flag log_errors on
php_value error_log /home/path/public_html/domain/PHP_errors.log