nginx | run multiple php versions in the smae server

# nginx-multiple-php
allow nginx to process multiple php versions on the same machine 


- Hosts File Content:
/etc/hosts

127.0.0.1 localhost
127.0.0.1 saleh-lpt
127.0.0.1 dsb.co
127.0.0.1 dsb-php7.co
127.0.0.2 dsb-php5.co
-------------------------------

- PHP 7 FPM Listen IP:PORT
/etc/php/7.1/fpm/pool.d/www.conf

listen = 127.0.0.1:9000
-------------------------------

- PHP 5 FPM Listen IP:PORT
/etc/php/5.6/fpm/pool.d/www.conf

listen = 127.0.0.2:9000
-------------------------------

- Nginx Config
/etc/nginx/sites-enabled/default
location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        # With php-fpm (or other unix sockets):
        # fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        # With php-cgi (or other tcp sockets):
        fastcgi_pass $server_addr:9000;
}

-------------------------------

site-nginx.confg file:

#
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# https://www.nginx.com/resources/wiki/start/
# https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
# https://wiki.debian.org/Nginx/DirectoryStructure
#
# In most cases, administrators will remove this file from sites-enabled/ and
# leave it as reference inside of sites-available where it will continue to be
# updated by the nginx packaging team.
#
# This file will automatically load configuration files provided by other
# applications, such as Drupal or Wordpress. These applications will be made
# available underneath a path with that package name, such as /drupal8.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
#
# Default server configuration
#

server {
    charset utf-8;
    client_max_body_size 128M;
    listen 80 default_server;
    #listen [::]:80 default_server;
    disable_symlinks off;

    # SSL configuration
    #
    # listen 443 ssl default_server;
    # listen [::]:443 ssl default_server;
    #
    # Note: You should disable gzip for SSL traffic.
    # See: https://bugs.debian.org/773332
    #
    # Read up on ssl_ciphers to ensure a secure configuration.
    # See: https://bugs.debian.org/765782
    #
    # Self signed certs generated by the ssl-cert package
    # Don't use them in a production server!
    #
    # include snippets/snakeoil.conf;
    root /var/www/html;

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

    server_name localhost;

    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }
    
    location / {
        set $new_alias $document_root;
        add_header i-request "$request";

        try_files $uri $uri/ /index.php?$query_string;
        autoindex on;
    }

    location ~ ^/sites/.*/files/imagecache/ {
        try_files $uri @drupal;
    }

    # pass PHP5 scripts to FastCGI server
    #
    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        # With php-fpm (or other unix sockets):
        # fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        # With php-cgi (or other tcp sockets):
        fastcgi_pass $server_addr:9000;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
        deny all;
    }
}