Apache Multi Instance & Simultaneous PHP Versions

There are plenty of reasons you might want to use multiple versions of PHP on a server. In my case I needed to set up a staging server that will be used to demo various websites and web apps that have different PHP requirements.

The following diagram shows the flow the system will take to segregate the different instances.
alt

TLDR;

All the following steps have been accumulated into a shell script that will get you going.

apache-multi-instance Shell Script

Prepare system for install

This has been tested and built on Ubuntu 16.04 LTS

sudo apt update  
sudo apt install curl -y  

Prepare for multiple versions of php

sudo apt install software-properties-common -y  
sudo add-apt-repository ppa:ondrej/php -y  
sudo apt update  

Install PHP's

PHP 5.6

sudo apt install php5.6 php5.6-curl php5.6-mysql php5.6-mcrypt php5.6-gd php5.6-mbstring php5.6-zip php5.6-opcache php5.6-readline php5.6-xml -y  

PHP 7.0

sudo apt install php7.0 php7.0-curl php7.0-mysql php7.0-mcrypt php7.0-gd php7.0-mbstring php7.0-zip php7.0-opcache php7.0-readline php7.0-xml -y  

PHP 7.1

sudo apt install php7.1 php7.1-curl php7.1-mysql php7.1-mcrypt php7.1-gd php7.1-mbstring php7.1-zip php7.1-opcache php7.1-readline php7.1-xml -y  

mcrypt deprecated after 7.1

PHP 7.2

sudo apt install php7.2 php7.2-curl php7.2-mysql php7.2-gd php7.2-mbstring php7.2-zip php7.2-opcache php7.2-readline php7.2-xml -y  

PHP 7.3

sudo apt install php7.3 php7.3-curl php7.3-mysql php7.3-gd php7.3-mbstring php7.3-zip php7.3-opcache php7.3-readline php7.3-xml -y  

ONE LINER

sudo apt install php5.6 php5.6-curl php5.6-mysql php5.6-mcrypt php5.6-gd php5.6-mbstring php5.6-zip php5.6-opcache php5.6-readline php5.6-xml php7.0 php7.0-curl php7.0-mysql php7.0-mcrypt php7.0-gd php7.0-mbstring php7.0-zip php7.0-opcache php7.0-readline php7.0-xml php7.1 php7.1-curl php7.1-mysql php7.1-mcrypt php7.1-gd php7.1-mbstring php7.1-zip php7.1-opcache php7.1-readline php7.1-xml php7.2 php7.2-curl php7.2-mysql php7.2-gd php7.2-mbstring php7.2-zip php7.2-opcache php7.2-readline php7.2-xml php7.3 php7.3-curl php7.3-mysql php7.3-gd php7.3-mbstring php7.3-zip php7.3-opcache php7.3-readline php7.3-xml -y  

switch primary php for cli (optional)

sudo update-alternatives --set php /usr/bin/php7.3  

Install Apache

We install Apache 2nd so that we can clone the php modules when we create new apache instances.

sudo apt install apache2 libapache2-mod-php -y  

Use Apache Proper as the proxy

sudo a2enmod proxy  
sudo a2enmod proxy_http  
sudo a2enmod proxy_balancer  
sudo a2enmod lbmethod_byrequests

sudo a2dissite 000-default.conf  
sudo rm /etc/apache2/sites-available/000-default.conf  
sudo rm /etc/apache2/sites-available/default-ssl.conf

sudo vi /etc/apache2/sites-available/proxy.conf

<VirtualHost *:80>  
  ProxyPreserveHost On
  ProxyRequests Off
  ServerAlias *.56.test.com
  ProxyPass / http://127.0.0.1:8056/
  ProxyPassReverse / http://127.0.0.1:8056/
</VirtualHost>  
<VirtualHost *:80>  
  ProxyPreserveHost On
  ProxyRequests Off
  ServerAlias *.70.test.com
  ProxyPass / http://127.0.0.1:8070/
  ProxyPassReverse / http://127.0.0.1:8070/
</VirtualHost>  
<VirtualHost *:80>  
  ProxyPreserveHost On
  ProxyRequests Off
  ServerAlias *.71.test.com
  ProxyPass / http://127.0.0.1:8071/
  ProxyPassReverse / http://127.0.0.1:8071/
</VirtualHost>  
<VirtualHost *:80>  
  ProxyPreserveHost On
  ProxyRequests Off
  ServerAlias *.72.test.com
  ProxyPass / http://127.0.0.1:8072/
  ProxyPassReverse / http://127.0.0.1:8072/
</VirtualHost>  
<VirtualHost *:80>  
  ProxyPreserveHost On
  ProxyRequests Off
  ServerAlias *.73.test.com
  ProxyPass / http://127.0.0.1:8073/
  ProxyPassReverse / http://127.0.0.1:8073/
</VirtualHost>

sudo a2ensite proxy.conf

sudo service apache2 start  

Apache 5.6

sudo sh /usr/share/doc/apache2/examples/setup-instance php56

sudo a2dismod-php56 php7.3 php7.2 php7.1 php7.0  
sudo a2enmod-php56 php5.6  
sudo update-rc.d apache2-php56 defaults  
sudo a2enmod-php56 vhost_alias  
sudo mkdir -p /var/www/php56/test  
sudo bash -c 'echo "<?php echo phpinfo(); ?>" > /var/www/php56/test/index.php'  
sudo sed -i "s/.*Listen 80.*/Listen 8056/" /etc/apache2-php56/ports.conf  
sudo sed -i "s/.*Listen 443.*/Listen 4056/" /etc/apache2-php56/ports.conf

sudo vi /etc/apache2-php56/sites-available/wildcard.56.test.com.conf

<VirtualHost *:8056>  
        ServerAlias *.56.test.com

        ServerAdmin deac@sfp.net
        VirtualDocumentRoot /var/www/php56/%1/

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

sudo a2ensite-php56 wildcard.56.test.com.conf  
sudo a2dissite-php56 000-default.conf  
sudo rm /etc/apache2-php56/sites-available/000-default.conf  
sudo rm /etc/apache2-php56/sites-available/default-ssl.conf

sudo service apache2-php56 restart  

Repeat for Apache PHP 7.0

Repeat for Apache PHP 7.1

Repeat for Apache PHP 7.2

Repeat for Apache PHP 7.3

Apache 7.3

sudo sh /usr/share/doc/apache2/examples/setup-instance php73

sudo a2dismod-php73 php5.6 php7.2 php7.1 php7.0  
sudo a2enmod-php73 php7.3  
sudo update-rc.d apache2-php73 defaults  
sudo a2enmod-php73 vhost_alias  
sudo mkdir -p /var/www/php73/test  
sudo bash -c 'echo "<?php echo phpinfo(); ?>" > /var/www/php73/test/index.php'  
sudo sed -i "s/.*Listen 80.*/Listen 8073/" /etc/apache2-php73/ports.conf  
sudo sed -i "s/.*Listen 443.*/Listen 4073/" /etc/apache2-php73/ports.conf

sudo vi /etc/apache2-php73/sites-available/wildcard.73.test.com.conf

<VirtualHost *:8073>  
        ServerAlias *.73.test.com

        ServerAdmin deac@sfp.net
        VirtualDocumentRoot /var/www/php73/%1/

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

sudo a2ensite-php73 wildcard.73.test.com.conf  
sudo a2dissite-php73 000-default.conf  
sudo rm /etc/apache2-php73/sites-available/000-default.conf  
sudo rm /etc/apache2-php73/sites-available/default-ssl.conf

sudo service apache2-php73 start  

Testing

Run the script in a vagrant box to experiment with. The vagrant box will need to be on the same network in order to access it.

# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|

  config.vm.box = "ubuntu/xenial64"

  config.vm.network "public_network"

  config.vm.network :forwarded_port, host: 8080, guest: 80
  config.vm.network :forwarded_port, host: 8056, guest: 8056
  config.vm.network :forwarded_port, host: 8070, guest: 8070
  config.vm.network :forwarded_port, host: 8071, guest: 8071
  config.vm.network :forwarded_port, host: 8072, guest: 8072
  config.vm.network :forwarded_port, host: 8073, guest: 8073

end