How to use Find_IN_SET in codeigniter?

Question

public function job_fetch($key)
    {
        $this->db->select('*');
        $this->db->from('job');
        $where = "FIND_IN_SET(".$key.", job_title) and FIND_IN_SET(".$key.", city)";
        $this->db->where($where);
        $query = $this->db->get();
        $result = $query->result_array();
        return $result;
    }

In this code, I am passing a variable ie $key where $key is an array and it look like Array ( [0] => java [1] => developer [2] => hibernate [3] => struts [4] => in [5] => mumbai [6] => noida [7] => delhi and I want to fetch data by job_title and city if value lies in $key so how can I fix it? Please help me.

Thank You

Answer 1

public function job_fetch($key)
    {
        $this->db->select('*');
        $this->db->from('job');
        $this->db->where("FIND_IN_SET(".$key.", job_title)");
        $this->db->or_where("FIND_IN_SET(".$key.", city)");
        $query = $this->db->get();
        $result = $query->result_array();
        return $result;
    }

Answer 2

This is how you do WHERE something AND something in codeigniter:

$this->db->where("FIND_IN_SET(".$key.", job_title)");
$this->db->where("FIND_IN_SET(".$key.", city)");