/**
* closeConnections closes database connection
* @param : No parameters
* <p> This function closes database connection</p>
* @return void
*/
public static function closeConnections()
{
try {
foreach (self::$connections as $connection) {
try {
$connection->close();
} catch (Exception $closeErr) {
}
}
self::$connections = null;
} catch (Exception $err) {
echo $err->getMessage();
}
}