Adding additonal PHP versions to ISPConfig 3.1dev

You can use these steps:

Code:

sudo -
apt-get install build-essential nano
apt-get install libfcgi-dev libfcgi0ldbl libjpeg62-dbg libmcrypt-dev libssl-dev libc-client2007e libc-client2007e-dev libxml2-dev libbz2-dev libcurl4-openssl-dev libjpeg-dev libpng12-dev libfreetype6-dev libkrb5-dev libpq-dev libxml2-dev libxslt1-dev
ln -s /usr/lib/libc-client.a /usr/lib/x86_64-linux-gnu/libc-client.a
mkdir /opt/php-5.6.25
mkdir /usr/local/src/php5-build
cd /usr/local/src/php5-build
wget http://de.php.net/get/php-5.6.25.tar.bz2/from/this/mirror -O php-5.6.25.tar.bz2
tar jxf php-5.6.25.tar.bz2
cd php-5.6.25/
./configure --prefix=/opt/php-5.6.25 --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-mysql --with-pdo-mysql --with-mysqli --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-gettext --with-xmlrpc --with-xsl --with-kerberos --enable-fpm
make
make install
cp /usr/local/src/php5-build/php-5.6.25/php.ini-production /opt/php-5.6.25/lib/php.ini

and then use this guide:

https://www.howtoforge.com/tutorial/how-to-install-php-7-on-debian/

starting from the command:

cp /opt/php-7.0.7/etc/php-fpm.conf.default /opt/php-7.0.7/etc/php-fpm.conf

just ensure to replace the paths in all commands: /opt/php-7.0.7 = /opt/php-5.6.25 in your installation.