Error when calling procedures in code igniter - codeigniter

Question

I am calling a procedure in code igniter and when I try to call another procedure I get the following error:
Error Number: 2014
Commands out of sync; you can't run this command now
call get_post_info($id)
Filename: C:/Apache24/htdocs/application/models/Posts_model.php
Line Number: 18
I think I need to clear the result set... not sure.
Here is my model:
<?php class Posts_model extends CI_Model {
public function __construct()
{
$this->load->database();
}
public function get_post_ids($acc_id){
$query = $this->db->query('call get_post_ids('.$this->db->escape($acc_id).')');
return $query->row_array();
}
public function get_post($id)
{
$query = $this->db->query('call get_post_info($id)');
return $query->row_array();
}
}
In my controller:
$post_ids = $this->posts_model->get_post_ids(1);
foreach ($post_ids as $id){
array_push($data, $this->posts_model->get_post($id));
}

Answer 1

I didn't actually run these solutions, but I found some info that might be what you look for. First of all, check this post about the cause of the problem.
I suppose $query->free_result() should solve the problem:
public function get_post_ids($acc_id){
$query = $this->db->query('call get_post_ids('.$this->db->escape($acc_id).')');
$result = $query->row_array();
$query->free_result();
return $result;
}
And in case that doesn't work, this this may be a good solution for CodeIgniter.