mysql PHP extension not installed

Hello, i'm trying to install oxwall, and i have this message as error: mysql PHP extension not installed
i'm running on debian 9, and have php 7.0 installed
when i do:
ls /etc/php/7.0/apache2/conf.d

10-mysqlnd.ini 20-ftp.ini 20-pdo_mysql.ini 20-sysvsem.ini
10-opcache.ini 20-gd.ini 20-pdo_sqlite.ini 20-sysvshm.ini
10-pdo.ini 20-gettext.ini 20-phar.ini 20-tidy.ini
15-xml.ini 20-iconv.ini 20-posix.ini 20-tokenizer.ini
20-apcu.ini 20-imagick.ini 20-pspell.ini 20-wddx.ini
20-bz2.ini 20-imap.ini 20-readline.ini 20-xmlreader.ini
20-calendar.ini 20-intl.ini 20-recode.ini 20-xmlrpc.ini
20-ctype.ini 20-json.ini 20-shmop.ini 20-xmlwriter.ini
20-curl.ini 20-mbstring.ini 20-simplexml.ini 20-xsl.ini
20-dom.ini 20-mcrypt.ini 20-sockets.ini 20-zip.ini
20-exif.ini 20-memcache.ini 20-sqlite3.ini
20-fileinfo.ini 20-mysqli.ini 20-sysvmsg.ini
What can i try now?
thank you

 

Install php-mysql ?

 

hello,
That's what i tried to do.
But it seem's ok, i can see the mysql pdo, but it doesn't work .

 

What show commands

Code:

apt-cache policy php-mysql
apt-cache policy php7.0-mysql

 

hello, thank you for your answer, i've decided to try something else, oxwall is old and not updated really.
to answer you:
first command result:
php-mysql:
Installé : 1:7.0+49
Candidat : 1:7.0+49
Table de version :
*** 1:7.0+49 500
500 http://debian.mirrors.ovh.net/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status

second command result:
php7.0-mysql:
Installé : 7.0.33-0+deb9u3
Candidat : 7.0.33-0+deb9u3
Table de version :
*** 7.0.33-0+deb9u3 500
500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
100 /var/lib/dpkg/status
7.0.33-0+deb9u1 500
500 http://debian.mirrors.ovh.net/debian stretch/main amd64 Packages