call to undefined method CI_Input::load_query() - php

Question

i am using codeigniter 3.0.4 framework. i have extended the input class named as MY_input.php. i have placed this file on inside the application/core folder. This is working fine on my localhost xampp server. But i am getting this error call to undefined method CI_Input::load_query() when i deploy my project folder on a live server. i have uploaded the files correctly and i have MY_input.php in application/core folder on the live server as well.
i am still running it successfully on my localhost but can't do so on live. i am pasting the relevant code here. Inside Login_controller i have
function displaySorted($query_id = 0,$sortBy = 'DeviceName',$sortOrder = 'asc',$offset=0)
{
$dataS = $this->session->userdata('logged_in');
if(isset($dataS))
{
$limit = 20;
$data['offset'] = $this->uri->segment(6);
$data['query_id']=$query_id;
$data['fields'] = array(
'ID' => 'ID',
'DeviceType' => 'Device Type',
'RegistrationDateTime' => 'RegistrationDateTime',
'LastUpdateDateTime' => 'LastUpdateDateTime',
'LastPushNotificationSent' => 'LastPushNotificationSent',
'DeviceName' => 'Device Name',
'Latitude' => 'Latitude',
'Longitude' => 'Longitude',
'CityName' => 'CityName',
'StateName' => 'StateName',
'CountryName' => 'CountryName',
'AppVersion' => 'AppVersion',
'iOSVersion' => 'iOSVersion',
'IPAddress' => 'IPAddress',
'TotalCities' => 'TotalCities',
'DeviceDID' => 'DeviceDID',
'DeviceToken'=> 'DeviceToken',
'DeviceLanguageID'=> 'DeviceLanguageID',
'LocationID' => 'LocationID',
'TempScale' => 'TempScale',
'IsFreezeAlertEnabled' => 'IsFreezeAlertEnabled',
'ShouldShowTempOnBadge' => 'ShouldShowTempOnBadge',
'ShowNegativeAsPositive' => 'ShowNegativeAsPositive',
'LastTempC' => 'LastTempC',
'LastTempF' => 'LastTempF',
'IsDeviceUsingProdCert' => 'IsDeviceUsingProdCert'
);
$this->input->load_query($query_id);
$query_array = array(
'DeviceName' => $this->input->get('DeviceName'),
'RegistrationDateTime' => $this->input->get('RegistrationDateTime'),
'LastUpdateDateTime' => $this->input->get('LastUpdateDateTime'),
'AppVersion' => $this->input->get('AppVersion'),
'iOSVersion' => $this->input->get('iOSVersion'),
'DeviceDID' => $this->input->get('DeviceDID'),
'DeviceToken' => $this->input->get('DeviceToken')
);
$results = $this->user_model->searchSorted($query_array,$limit, $offset, $sortBy, $sortOrder);
$data['tableInfo'] = $results['rows'];
$data['num_results'] = $results['num_rows'];
$data['DeviceName'] =$query_array['DeviceName']; $data['RegistrationDateTime']=$query_array['RegistrationDateTime'];
$data['LastUpdateDateTime']=$query_array['LastUpdateDateTime'];
$data['AppVersion']=$query_array['AppVersion'];
$data['iOSVersion']=$query_array['iOSVersion'];
$data['DeviceDID']=$query_array['DeviceDID'];
$data['DeviceToken']=$query_array['DeviceToken'];
//pagination functionality
$config['base_url'] = site_url("login_controller/displaySorted/$query_id/$sortBy/$sortOrder");
$config['per_page'] = $limit;
$config['total_rows'] = $data['num_results'];
$this->pagination->initialize($config);
$data['pagination'] = $this->pagination->create_links();
$data['sortBy'] = $sortBy;
$data['sortOrder'] = $sortOrder;
$this->load->view('adminPanel_view', $data);
}
else
{
//echo $this->;exit;
redirect('login_controller');
}
}
Now MY_input.php contains this code:
class MY_input extends CI_Input
{
public function __construct()
{
parent::__construct();
}
public function save_query($query_array)
{
$CI =&get_instance();
$CI->db->insert('ci_query',array('query_string'=> http_build_query($query_array)));
return $CI->db->insert_id();
}
public function load_query($query_id)
{
$CI =&get_instance();
$rows = $CI->db->get_where('ci_query', array('id' => $query_id))->result();
if (isset($rows[0]))
{
parse_str($rows[0]->query_string, $_GET);
}
}
[![enter image description here][1]][1]}
Now the error is not inside the code but i am placing MY_input.php file. But i don't know what to do and how to solve this issue plus i don't want to change the core framework files of codeigniter.

Answer 1

I think you should use the right camel case file name: MY_Input.php
and class name:
class MY_Input extends CI_Input {
(please notice: the I letter is uppercase)
see documentation:
http://www.codeigniter.com/user_guide/general/core_classes.html