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I have tried to connect to Mysql DB using Mysqli by declaring 'driver' => 'mysqli' inside DB array in settings.php but I get the following error:

Warning: require_once(/srv/http/my-domain/includes/database/mysqli/database.inc): failed to open stream: No such file or directory in /http/www/my-domain/includes/database/database.inc on line 1688

Thanks.

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  • No, the file does not exist.
    – W.M.
    Commented Dec 6, 2014 at 19:19
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    Uses PDO, better than MySQL driver and similar to mysqli
    – mikeytown2
    Commented Dec 7, 2014 at 1:10

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No. Drupal 7 does not come with Mysqli support. It only comes with PDO based drivers for MySQL, pgSQL and SQLite.

https://www.drupal.org/node/310070

https://www.drupal.org/requirements/pdo

See the files :

  • INSTALL.mysql.txt
  • INSTALL.pgsql.txt
  • INSTALL.sqlite.txt

to find out more about how to install using each option.

There are also many community provided solutions for connecting to other databases including MsSQL, Mongo and Oracle.

Have a look at the Drupal modules page for more information on database drivers

The core advantage of PDO over MySQLi is in its database driver support. PDO supports 10+ different drivers, opposed to MySQLi, which supports MySQL only.

If you are interested in the comparison between PDO and Mysqli there are many articles around including this one.

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