error: database connection failed Print

Sometime, when moodle has been installed with Joomlapolis installation scripts, you can get a error: database connection failed message. This is due to the fact that Moodle uses mysqli drivers instead of mysql drivers.

To correct the problem, replace, in the config.php file of moodle

$CFG->dbtype = 'mysql';

by

$CFG->dbtype = 'mysqli';

This should be sufficient.