codeigniter-2.1.3 with sqlite3 db

[eluser]Unknown[/eluser]
I'm writing a blog, everything is working fine on xampp localhost, but when i implemented it on the server, the following code isn't working

Code:

$this-db->where('id', $id);
$this->db->get('blogs');

and

Code:

$this->db->insert('blogs, $data);
return $this->db->insert_id();

and

Code:

$this->db->insert('images', $data);

but in the other hand, the following is working:

Code:

$this->db->get('blogs')

can anyone help me to solve this?