Compile PHP 7.1, 7.2 and 7.3 besides 7.0

For Debian you can use binary packages. Just follow this article:

sudo apt update 
sudo apt upgrade

sudo apt install ca-certificates apt-transport-https 
wget -q https://packages.sury.org/php/apt.gpg -O- | sudo apt-key add -
echo "deb https://packages.sury.org/php/ stretch main" | sudo tee /etc/apt/sources.list.d/php.list

sudo apt update
sudo apt install php5.6
sudo apt install php5.6-dev php5.6-cli php5.6-fpm php5.6-common php5.6-curl php5.6-mbstring php5.6-mysql php5.6-xml

sudo apt update
sudo apt install php7.3
sudo apt install php7.3-dev php7.3-cli php7.3-fpm php7.3-common php7.3-curl php7.3-mbstring php7.3-mysql php7.3-xml php7.3-soap php7.3-xml php7.3-gd php7.3-zip php7.3-mbstring php7.3-xml php7.3-dom php7.3-bcmath php7.3-bz2 php7.3-curl php7.3-gd php7.3-intl php7.3-json php7.3-mbstring php7.3-readline php7.3-xml php7.3-zip

If you don’t want to use binary packages and instead compile from source then follow below steps:

./configure –prefix=/opt/php-7.1 –with-pdo-pgsql –with-zlib-dir –with-freetype-dir –enable-mbstring –with-libxml-dir=/usr –enable-soap –enable-calendar –with-curl –with-mcrypt –with-zlib –with-gd –with-pgsql –disable-rpath –enable-inline-optimization –with-bz2 –with-zlib –enable-sockets –enable-sysvsem –enable-sysvshm –enable-pcntl –enable-mbregex –enable-exif –enable-bcmath –with-mhash –enable-zip –with-pcre-regex –with-pdo-mysql –with-mysqli –with-mysql-sock=/var/run/mysqld/mysqld.sock –with-jpeg-dir=/usr –with-png-dir=/usr –enable-gd-native-ttf –with-openssl –with-fpm-user=www-data –with-fpm-group=www-data –with-libdir=/lib/x86_64-linux-gnu –enable-ftp –with-imap –with-imap-ssl –with-kerberos –with-gettext –with-xmlrpc –with-xsl –enable-opcache –enable-fpm
make
make install

cp /usr/local/src/php7.1-build/php-7.1.25/php.ini-production /opt/php-7.1/lib/php.ini
cp /opt/php-7.1/etc/php-fpm.conf.default /opt/php-7.1/etc/php-fpm.conf
cp /opt/php-7.1/etc/php-fpm.d/www.conf.default /opt/php-7.1/etc/php-fpm.d/www.conf
vi /opt/php-7.1/etc/php-fpm.conf

Configure PHP 7.2

mkdir -p /opt/php-7.2

mkdir /usr/local/src/php7.2-build

cd /usr/local/src/php7.2-build
wget http://de2.php.net/get/php-7.2.13.tar.bz2/from/this/mirror -O php-7.2.13.tar.bz2
tar jxf php-7.2.13.tar.bz2
cd php-7.2.13

./configure –prefix=/opt/php-7.2 –with-pdo-pgsql –with-zlib-dir –with-freetype-dir –enable-mbstring –with-libxml-dir=/usr –enable-soap –enable-calendar –with-curl –with-zlib –with-gd –with-pgsql –disable-rpath –enable-inline-optimization –with-bz2 –with-zlib –enable-sockets –enable-sysvsem –enable-sysvshm –enable-pcntl –enable-mbregex –enable-exif –enable-bcmath –with-mhash –enable-zip –with-pcre-regex –with-pdo-mysql –with-mysqli –with-mysql-sock=/var/run/mysqld/mysqld.sock –with-jpeg-dir=/usr –with-png-dir=/usr –with-openssl –with-fpm-user=www-data –with-fpm-group=www-data –with-libdir=/lib/x86_64-linux-gnu –enable-ftp –with-imap –with-imap-ssl –with-kerberos –with-gettext –with-xmlrpc –with-xsl –enable-opcache –enable-fpm
make
make install

cp /usr/local/src/php7.2-build/php-7.2.13/php.ini-production /opt/php-7.2/lib/php.ini
cp /opt/php-7.2/etc/php-fpm.conf.default /opt/php-7.2/etc/php-fpm.conf
cp /opt/php-7.2/etc/php-fpm.d/www.conf.default /opt/php-7.2/etc/php-fpm.d/www.conf

vi /opt/php-7.2/etc/php-fpm.conf
[…]
pid = run/php-fpm.pid
[…]

vi /opt/php-7.2/etc/php-fpm.d/www.conf
[…]
listen = 127.0.0.1:8998
[…]

vi /lib/systemd/system/php-7.2-fpm.service

[Unit]
Description=The PHP 7.2 FastCGI Process Manager
After=network.target

[Service]
Type=simple
PIDFile=/opt/php-7.2/var/run/php-fpm.pid
ExecStart=/opt/php-7.2/sbin/php-fpm –nodaemonize –fpm-config /opt/php-7.2/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID

[Install]
WantedBy=multi-user.target

systemctl enable php-7.2-fpm.service
systemctl daemon-reload
systemctl start php-7.2-fpm.service
vi /opt/php-7.2/lib/php.ini
[…]
zend_extension=opcache.so

# ispconfig:
FastCGI Settings tab:
Path to the PHP FastCGI binary: /opt/php-7.2/bin/php-cgi
Path to the php.ini directory: /opt/php-7.2/lib

PHP-FPM Settings tab:
Path to the PHP-FPM init script: php-7.2-fpm
Path to the php.ini directory: /opt/php-7.2/lib
Path to the PHP-FPM pool directory: /opt/php-7.2/etc/php-fpm.d

Configure PHP 7.3

mkdir -p /opt/php-7.3

mkdir /usr/local/src/php7.3-build

cd /usr/local/src/php7.3-build
wget http://de2.php.net/get/php-7.3.0.tar.bz2/from/this/mirror -O php-7.3.0.tar.bz2
tar jxf php-7.3.0.tar.bz2

cd php-7.3.0
apt-get install libzip-dev
./configure –prefix=/opt/php-7.3 –with-pdo-pgsql –with-zlib-dir –with-freetype-dir –enable-mbstring –with-libxml-dir=/usr –enable-soap –enable-calendar –with-curl –with-zlib –with-gd –with-pgsql –disable-rpath –enable-inline-optimization –with-bz2 –with-zlib –enable-sockets –enable-sysvsem –enable-sysvshm –enable-pcntl –enable-mbregex –enable-exif –enable-bcmath –with-mhash –enable-zip –with-pcre-regex –with-pdo-mysql –with-mysqli –with-mysql-sock=/var/run/mysqld/mysqld.sock –with-jpeg-dir=/usr –with-png-dir=/usr –with-openssl –with-fpm-user=www-data –with-fpm-group=www-data –with-libdir=/lib/x86_64-linux-gnu –enable-ftp –with-imap –with-imap-ssl –with-kerberos –with-gettext –with-xmlrpc –with-xsl –enable-opcache –enable-fpm
make
make install

cp /usr/local/src/php7.3-build/php-7.3.0/php.ini-production /opt/php-7.3/lib/php.ini
cp /opt/php-7.3/etc/php-fpm.conf.default /opt/php-7.3/etc/php-fpm.conf
cp /opt/php-7.3/etc/php-fpm.d/www.conf.default /opt/php-7.3/etc/php-fpm.d/www.conf

vi /opt/php-7.3/etc/php-fpm.conf
[…]
pid = run/php-fpm.pid
[…]

vi /opt/php-7.3/etc/php-fpm.d/www.conf
[…]
listen = 127.0.0.1:8997
[…]

vi /lib/systemd/system/php-7.3-fpm.service

[Unit]
Description=The PHP 7.3 FastCGI Process Manager
After=network.target

[Service]
Type=simple
PIDFile=/opt/php-7.3/var/run/php-fpm.pid
ExecStart=/opt/php-7.3/sbin/php-fpm –nodaemonize –fpm-config /opt/php-7.3/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID

[Install]
WantedBy=multi-user.target

systemctl enable php-7.3-fpm.service
systemctl daemon-reload
systemctl start php-7.3-fpm.service
vi /opt/php-7.3/lib/php.ini
[…]
zend_extension=opcache.so

# ispconfig:
FastCGI Settings tab:
Path to the PHP FastCGI binary: /opt/php-7.3/bin/php-cgi
Path to the php.ini directory: /opt/php-7.3/lib

PHP-FPM Settings tab:
Path to the PHP-FPM init script: php-7.3-fpm
Path to the php.ini directory: /opt/php-7.3/lib
Path to the PHP-FPM pool directory: /opt/php-7.3/etc/php-fpm.d