Object of class stdClass could not be converted to string

Most likely, the userdata() function is returning an object, not a string. Look into the documentation (or var_dump the return value) to find out which value you need to use.

I use codeignator and I got the error:

Object of class stdClass could not be converted to string.

for this post I get my result

I use in my model section

$query = $this->db->get('user', 10);        return $query->result();

and from this post I use

$query = $this->db->get('user', 10);        return $query->row();

and I solved my problem

In General to get rid of

Object of class stdClass could not be converted to string.

try to use echo '<pre>'; print_r($sql_query); for my SQL Query got the result as

stdClass Object(    [num_rows] => 1    [row] => Array        (            [option_id] => 2            [type] => select            [sort_order] => 0        )    [rows] => Array        (            [0] => Array                (                    [option_id] => 2                    [type] => select                    [sort_order] => 0                )        ))

In order to acces there are different methods E.g.: num_rows, row, rows

echo $query2->row['option_id'];

Will give the result as 2