如何ubuntu 18.04安装/激活PHP扩展ext-mcrypt

Question

I am installing a fresh kubuntu system 18.04, which is using by default php7.2

A composer install for my current software project gibves me this error message:

The requested PHP extension ext-mcrypt * is missing from your system. Install or enable PHP's mcrypt extension.

Other than before there is no php-mcrypt available and other articles like this http://aryo.lecture.ub.ac.id/easy-install-php-mcrypt-extension-on-ubuntu-linux/ don't help since an analog php-mcrypt or php7-mcrypt does not exists.

How can I get a setup, which fulfills my requirement?

sudo apt-get install php7.2-ext-mcrypt

does not find an installation candidate.

Is there a difference between php 7.1 and 7.2?

not surprisingly this also does not do the trick:

$ sudo phpenmod mcrypt
WARNING: Module mcrypt ini file doesn't exist under /etc/php/7.2/mods-available
WARNING: Module mcrypt ini file doesn't exist under /etc/php/7.2/mods-available

Answer 1

So it looks like mcrypt is deprecated with php7.2

So I will either have to replace it in my software or follow e.g. this howto to circumvent it: https://serverpilot.io/community/articles/how-to-install-the-php-mcrypt-extension.html