Configure HostBill to use Mysql over SSL

HostBill makes use of PHP PDO for database operations, and as such you can configure it to use SSL when connecting to PDO.

In your HostBill's includes/config.php file add following lines to bottom of file contents (ensure to specify valid cert/key/ca paths):

//...
//use below to specify additional options passed to PDO:
$config['PDO.options']=[
    PDO::MYSQL_ATTR_SSL_KEY    				=>'/etc/mysql/ssl/client-key.pem',
    PDO::MYSQL_ATTR_SSL_CERT				=>'/etc/mysql/ssl/client-cert.pem',
    PDO::MYSQL_ATTR_SSL_CA    				=>'/etc/mysql/ssl/ca-cert.pem',
  //PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT	=> false							//to disable server cert verification
];

For other connection PDO SSL flags/options available refer to: https://www.php.net/manual/en/ref.pdo-mysql.php#pdo.constants