print last query in codeigniter

1print_r($this->db->last_query());    

1$this->db->last_query();

1$this->db->last_query();
2
3Returns the last query that was run (the query string, not the result). Example:
4$str = $this->db->last_query();
5
6// Produces: SELECT * FROM sometable.... 
7

1We can get last executed query using last_query() function of db class in codeigniter. It is a very simple to use $this->db->last_query() function to see SQL statements of last executed query in php codeigniter app. You have to simple code that function after your main query that you wanted check 
2$this->db->last_query()

1public function test_db(){    $query = $this->db->get("items");      $str = $this->db->last_query();       echo "<pre>";    print_r($str);    exit;}