PHP copy table from one database to another

// Create a new MySQL database connection
if (!$con = new mysqli('localhost', $username, $password, $database)) {
    die('An error occurred while connecting to the MySQL server!<br><br>' . $con->connect_error);
}

// Create an array of MySQL queries to run
$sql = array(
    'DROP TABLE IF EXISTS `backup_db.backup_table`;',
    'CREATE TABLE `backup_db.backup_table` SELECT * FROM `live_db.live_table`'
);

// Run the MySQL queries
if (sizeof($sql) > 0) {
    foreach ($sql as $query) {
        if (!$con->query($query)) {
            die('A MySQL error has occurred!<br><br>' . $con->error);
        }
    }
}

$con->close();