When installing the libapache2 php5.6 package, it gives an error. How to fix?

Question

PHP

Actually the question is in the title.
What is happening exactly. When installing libapache2-mod-php5.6, it crashes, I delete it, I put it again, the same topic. I've scoured the internet looking for an answer and haven't found anything yet. None of the advice helped.
That's why I decided to come here.

dpkg: error processing package libapache2-mod-php5.6 (--configure):
 subprocess installed post-installation script returned error exit status 10
Errors were encountered while processing:
 libapache2-mod-php5.6
E: Sub-process /usr/bin/dpkg returned an error code (1)

Answer 1

Roman T posted a good guide, which was the solution to this problem. Link to guide.

Answer 2

Try to reinstall apache completely

$ sudo apt-get purge apache2 
$ sudo apt-get purge php5 libapache2-mod-php5 
$ sudo apt-get autoremove 
$ sudo apt-get install apache2 libapache2-mod-php5 php5