If you get "File not found" error then add "root ROOT_DIR_LOCATION" directive to PHP location block i.e. "location ~* \.php$ { }" , where ROOT_DIR_LOCATION is root directory like "/usr/share/nginx/html" .
If you get "File not found" error then add "root ROOT_DIR_LOCATION" directive to PHP location block i.e. "location ~* \.php$ { }" , where ROOT_DIR_LOCATION is root directory like "/usr/share/nginx/html" .