NginX + PHP-FPM displays blank php pages

According to your configuration, you have two server{...} blocks which are exactly the same. So before I start explain what's wrong with your configuration, you need to provide more details. See down below for some troubleshooting hints.

For now, I'll post mine here and highlight a few directives that do matter.

My /etx/nginx/conf.d/default.conf looks as follow

server {

  # Replace this port with the right one for your requirements
  listen 80;

  # Multiple hostnames separated by spaces.  Replace these as well.
  server_name mydomain.nl;

  root /var/www/mydomain.nl/public_html/;

  access_log /var/log/nginx/access.log;
  error_log /var/log/nginx/error.log;

  index index.php index.html;

  location / {
    # This is cool because no php is touched for static content.
    try_files $uri $uri/ /index.php;
  }

  location ~* \.(jpg|jpeg|gif|css|png|js|ico|html)$ {
    expires max;
  }

  location ~* \.php$ {
    try_files $uri =404

    fastcgi_intercept_errors on;

    fastcgi_index   index.php;
    fastcgi_pass    unix:/var/run/php5-fpm.sock;

    include fastcgi_params;

    fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param   SCRIPT_NAME        $fastcgi_script_name;
  }

  location ~ /\.(ht|ssh) {
    deny  all;
  }

  location /status {
    include fastcgi_params;
    fastcgi_pass    unix:/var/run/php5-fpm.sock;
  }

}

The following directives are important:

server_name mydmaiin.nl; <-- This is unique for every server block.

root /var/www/mydomain.nl/public_html/; <-- This is the root that holds your website / data.

The rest is trivial.

So Let's take the /etc/php-fpm.d/www.conf file and examine. You chose to use a file socket

listen = /var/run/php-fpm/php-fpm.sock <-- php-fpm will communicate with nginx through this file. So this is my www.conf file unless you missed something. I've filtered out all commented lines. So these are the lines that are uncommented.

[www]
listen = /var/run/php5-fpm.sock
listen.allowed_clients = 127.0.0.1
listen.owner = nginx
listen.group = nginx
listen.mode = 0666
user = apache
group = apache
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35
slowlog = /var/log/php-fpm/www-slow.log
security.limit_extensions = .php
php_admin_value[error_log] = /var/log/php-fpm/www-error.log
php_admin_flag[log_errors] = on
php_value[session.save_handler] = files
php_value[session.save_path] = /var/lib/php/session

Troubleshooting

1) See directory permissions. In this case /usr/share/nginx/html

2) See php-fpm error logging. See if the configuration file is loading OK, by running

php-fpm -y /etc/php-fpm.conf

3) Change log_level = debug in /etc/php-fpm.conf

4) Come back with more details!