codeigniter 3 get count query code example

Example 1: count all results codeigniter

$this->db->select('id');
$this->db->from('table');
$this->db->where($your_conditions);
$num_results = $this->db->count_all_results();

Example 2: get result count codeigniter

public function record_count() {
   return $this->db->count_all("tablename");
}