PHP shows up as plain text after upgrade to 18.04

Question

I've just upgraded to Ubuntu 18.04. Now apache serves my website's php as plaintext php. I've already tried: Why are my PHP files showing as plain text? (on Stack Overflow) and PHP 7 and apache displays plain text and cannot be restarted. The installed php packages are:

php              php7.2-cli       php7.2-fpm       php7.2-mbstring  php7.2-pgsql     php7.2-sqlite3   php7.2-zip       php-curl         php-igbinary     php-pgsql        php-xml
php7.2           php7.2-common    php7.2-gd        php7.2-mysql     php7.2-readline  php7.2-xml       php-bz2          php-fpm          php-mbstring     php-soap         php-xmlrpc
php7.2-bz2       php7.2-curl      php7.2-json      php7.2-opcache   php7.2-soap      php7.2-xmlrpc    php-common       php-gd           php-mysql        php-sqlite3      php-zip

One of the websites in question can be seen here.

The apache error.log:

[Thu Apr 26 16:02:12.740886 2018] [mpm_prefork:notice] [pid 6504] AH00169: caught SIGTERM, shutting down

[Thu Apr 26 16:02:13.001806 2018] [mpm_prefork:notice] [pid 7704] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured -- resuming normal operations

[Thu Apr 26 16:02:13.001900 2018] [core:notice] [pid 7704] AH00094: Command line: '/usr/sbin/apache2'

And the access.log:

<MYIP> - - [26/Apr/2018:16:02:40 +0200] "-" 408 3435 "-" "-"

<MYIP> - - [26/Apr/2018:16:02:40 +0200] "-" 408 3435 "-" "-"

<MYIP> - - [26/Apr/2018:16:02:40 +0200] "-" 408 3435 "-" "-"

Solution 1

This is what got my installation sorted

sudo apt install php7.2 php7.2-common php7.2-cli
sudo a2enmod php7.2

Solution 2

Actually, in addition to the commands in this answer, you need

sudo apt install libapache2-mod-php

as well. Somehow it has disappeared!

Comments

[pa4080]

Probably you should install and enable the right Apache's php module libapache2-mod-php7.2 (and purge the old one).

[Benedikt Bergenthal]

libapache2-mod-php7.2 is already the newest version. :(

[pa4080]

Maybe you should enable it: sudo a2enmod php7.2.

[Benedikt Bergenthal]

Module php7.2 already enabled. ;)

[pa4080]

Try to flush your browsers cache. This is the last idea that I have :)

[Benedikt Bergenthal]

well that simple solution did the trick. Thanks a lot for the new perspective :)

[pa4080]

I'm glad to help!

[Lily Bergonzat]

Could you write the answer as an answer then please? It would be helpful if other people stumble upon the same situation

[Agnius Vasiliauskas]

Thanks, to me enabling php7.2 module worked perfectly,- seems there was conflicts between multiple versions of php

[user1794918]

I only needed the second line a2enmod. Once that was enabled the application came up. thanks!