or_where inside where function active records - php

Question

I would like to ask if anyone of you know how to place a or_where inside a where in codeigniter?
I would like to create a query as shown below
select *
from table
where
(
(in = 0 and call_in = 1) or
(out = 0 and call_out = 1)
) and
mid = 0
ORDER BY id DESC
limit 1
I have created something like this
$result = $mysql_handler->select('*')
->from("table")
->where(
array(
"in" => 0,
"call_in" => 1
)
)
->or_where(
array(
"out" => 0,
"call_out" => 1
)
)
->where("mid", 0)
->order_by("id", "DESC")
->limit(1)
->get();
But I know this is not right since this code will produce something like this
select *
from table
where
(in = 0 and call_in = 1) or
(out = 0 and call_out = 1) and
mid = 0
ORDER BY id DESC
limit 1
I thinking of placing the or_where inside the where clause but I'm not sure if this is correct or how to do it. Please advice thanks.

Answer 1

You cannot combine where and or_where as you wanted. or_where can be used where only OR queries needed. You can try this for your solution
$this->db->from('table');
$this->db->select('*');
$this->db->where('((in = 0 and call_in = 1) OR (out = 0 and call_out = 1))');
$this->db->where("mid", 0);
$this->db->order_by("id", "DESC");
$this->db->limit(1);
$result=$this->db->get();
Or
$result = $mysql_handler->select('*')
->from("table")
->where('((in = 0 and call_in = 1) OR (out = 0 and call_out = 1))')
->where("mid", 0)
->order_by("id", "DESC")
->limit(1)
->get();