CODE EXAMPLES USAGE:

You can run the code examples by using either PHP's built-in web server or Docker containers.

PHP built-in web server

1. Install both PHP 5.6 and PHP 7 on a VM
2. Create a symlink /usr/bin/php5 to the php 5.6 install
3. Create a symlink /usr/bin/php7 to the php 7.0 install
4. Upload the code examples
5. Open 2 terminal windows and cd to the code examples in both
6. In the 1st: php5 -S ip_address:5656
7. In the 2nd: php7 -S ip_address:7070

Docker containers

Prerequisites :

• Docker must be installed on your computer/VM
• Composer must be installed

To run the containers :

$ php composer.phar install
$ php vendor/bin/linuxforcomposer.phar docker:run start

To stop the containers :

$ php vendor/bin/linuxforcomposer.phar docker:run stop

NOTE: On Windows, please use the Linux for Composer PHAR file in the 'vendor/linuxforphp/linuxforcomposer/bin' folder and replace the '${PWD}' environment variable with the full path to this working directory in the 'volumes' section of the 'linuxforcomposer.json' file (ex. '/c/Users/php7_examples:/srv/www').

FROM YOUR BROWSER:

1. Open a new tab
2. Go to ip_address:5656
3. Open a new tab
4. Go to ip_address:7070

In addition, if you are using the Docker containers :

5. Open a new tab
6. Go to ip_address:7171
7. Open a new tab
8. Go to ip_address:7272
9. Now you can demo the results of the same code in both PHP 5.x and PHP 7.x (PHP 7.1 and 7.2 if you are using Docker)

OPEN PORTS 5656 and 7070 in Fedora:

firewall-cmd --zone=public --add-port=5656/tcp --permanent
firewall-cmd --zone=public --add-port=7070/tcp --permanent
firewall-cmd --reload

OPEN PORTS 5656 and 7070 using iptables:

1. find line numbers:

iptables -L INPUT --line-numberss

2. insert the rule after a certain line number (i.e. 2)

iptables -I INPUT 2 -p tcp -m state --state NEW -m tcp --dport 5656 -j ACCEPT
iptables -I INPUT 2 -p tcp -m state --state NEW -m tcp --dport 7070 -j ACCEPT

3. save the new rules

service iptables save

Manual PHP 7 Installation

1. Download the target version
2. cd to that directory
3. Run these commands (assumes Linux, not logged in as root)

$./configure --with-pdo-mysql=/usr --enable-calendar --with-curl=/usr/include/curl --with-openssl --with-gettext=/usr --with-mhash=DIR --enable-intl --enable-mbstring --with-mcrypt=/usr --with-mysql-sock=/var/run/mysqld.sock --with-pdo-mysql=/usr --enable-zip --with-openssl=/usr --with-libxml-dir=/usr --with-libdir=/lib/x86_64-linux-gnu --enable-sockets --enable-libxml --enable-soap --with-gd --with-jpeg-dir=/usr --with-webp-dir=/usr --with-xpm-dir=/usr --with-png-dir=/usr --with-zlib-dir=/usr --with-freetype-dir=/usr --enable-gd-native-ttf
$ make
$ make test
$ sudo make install

By default, make install will install all the files in /usr/local/bin, /usr/local/lib etc.
You can specify an installation prefix other than /usr/local using --prefix, for instance

--prefix=$HOME

Ubuntu 16.04 Installation:

Libraries needed (given the "./configure" string above)

• sudo apt-get install libxml2-dev
• sudo apt-get install libssl-dev
• sudo apt-get install libcurl4-openssl-dev
• sudo apt-get install libwebp-dev
• sudo apt-get install libjpeg-dev
• sudo apt-get install libpng-dev
• sudo apt-get install libxpm-dev
• sudo apt-get install libfreetype6-dev
• sudo apt-get install libmcrypt-dev
• sudo apt-get install libmysqlclient-dev
• sudo apt-get install libvpx-dev

• Assumes MySQL has been installed

Redhat / Fedory Installation:

See: https://crybit.com/20-common-php-compilation-errors-and-fix-unix/