Multiple Insert

like this:

$last_user_id = $database->insert("account", [
	["user_name" => "foo",
	"email" => "foo@bar.com",
	"age" => 25,
	"lang" => ["en", "fr", "jp", "cn"]
	],
	[
	"user_name" => "foo2",
	"email" => "foo2@bar.com",
	"age" => 26,
	"lang" => ["en", "fr", "jp", "cn"]
	]
]);