How to activate PHP7.0 PDO in 16.04 LTS?

Installing php7.0-mysql should be enough:

sudo apt-get install php7.0-mysql

You will then need to ensure the module is enabled:

sudo phpenmod pdo_mysql

Then restart Apache to load the new modules:

sudo service apache2 restart

If the problem persists, do sudo apt install php7.0-sqlite3

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