Multiple PHP Versions include in release
In connection with the new linux distributions support for several versions of php(add-apt-repository ppa:ondrej/php), I suggest adding the currently supported ispconfig to the standard installation PHP 5.6 / 7.0 / 7.1 / 7.2 / 7.3 Updates are made from repositories, the installation on different OS is almost the same. I'm not talking about make in / opt Only about fully supported several versions of php. The remaining versions of php will be still unchanged.