PHP 5.6 + Nginx 1.10.1 + PostgreSQL 9.5.3 on CentOS 6.8

$ sudo vim /etc/sysconfig/i18n

    LC_ALL="en_US.UTF-8"

$ source /etc/sysconfig/i18n

$ sudo rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm

$ sudo rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm

$ sudo rpm -Uvh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm

$ sudo rpm -Uvh https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-6-x86_64/pgdg-centos95-9.5-2.noarch.rpm

$ sudo yum install php56w php56w-common php56w-fpm php56w-mbstring php56w-mcrypt php56w-pear php56w-pgsql

$ sudo yum install nginx

$ sudo yum install postgresql95-server postgresql95-contrib

$ sudo setsebool -P httpd_can_network_connect_db 1
$ sudo setsebool -P httpd_can_network_connect 1

$ sudo chkconfig php-fpm on
$ sudo vim /etc/php-fpm.d/www.conf

    user = nginx
    group = nginx

    listen = /var/run/php-fpm/php-fpm.sock
    listen.user = nginx
    listen.group = nginx

$ sudo openssl req -x509 -nodes -days <num_days> -newkey rsa:2048 -keyout /path/to/ssl.key -out /path/to/ssl.crt

$ sudo chkconfig nginx on
$ sudo vim /etc/nginx/conf.d/default.conf

    server {
        listen 80 default_server;
        listen [::]:80 default_server;
        listen 443 ssl;

        root /var/www;

        # Add index.php to the list if you are using PHP
        index index.php index.html index.htm index.nginx-debian.html;

        server_name _;

        ssl_certificate /path/to/ssl.crt;
        ssl_certificate_key /path/to/ssl.key;

        location / {
            try_files $uri $uri/ /index.php?$query_string;
        }

        location ~ \.php$ {
            try_files $uri /index.php =404;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include fastcgi_params;
        }
    }

$ sudo chkconfig postgresql-9.5 on
$ sudo service postgresql-9.5 initdb
$ sudo service postgresql-9.5 restart

$ sudo su - postgres
$ createuser -ePE <db_user>
$ createdb -e -E UTF-8 -O <db_user> <db_name>
$ exit

$ sudo vim /var/lib/pgsql/9.5/data/postgresql.conf

    listen_addresses = 'localhost' // comma-separated, '*' for all

    ...

    ssl = on
    ssl_cert_file = '/path/to/ssl.crt'
    ssl_key_file = '/path/to/ssl.key'

$ sudo vim /var/lib/pgsql/9.5/data/pg_hba.conf

    # TYPE  DATABASE        USER            ADDRESS                 METHOD
    host    all             all             127.0.0.1/24            md5

$ tar jxvf phpPgAdmin-x.x.tar.bz2
$ rm phpPgAdmin-x.x.tar.bz2

$ sudo mv -v phpPgAdmin-x.x /var/www/phpPgAdmin
$ sudo chown -R nginx:nginx /var/www/phpPgAdmin

$ sudo vim /var/www/phpPgAdmin/conf/config.inc.php

    $conf['servers'][0]['desc'] = 'Host Name';
    $conf['servers'][0]['host'] = 'URL/IP Address';
    $conf['servers'][0]['port'] = 5432;

    ...

    $conf['extra_login_security'] = true;

    // other means. (e.g. Run 'SELECT * FROM pg_database' in the SQL area.)
    $conf['owned_only'] = true;

    ...

$ sudo restorecon -R -v /var/www/phpPgAdmin

$ sudo service postgresql-9.5 restart
$ sudo service php-fpm restart
$ sudo service nginx restart