Invalid argument supplied for foreach() - Codeignitor - php

Question

I am getting an error "Invalid argument supplied for foreach()" while trying to fetch 'id' column using foreach loop:
Codeignitor version: 3.0.1
Controller:
<?php
class Users extends CI_Controller {
public function show(){
$this->load->model('user_model');
$result = $this->user_model->get_users();
foreach($result as $object){
echo $object->id;
}
}
}
?>
Model:
<?php
class User_model extends CI_Model {
public function get_users(){
$this->db->get('users');
}
}
?>
As I checked table name and column names are correct.

Answer 1

<?php
class User_model extends CI_Model {
public function get_users(){
$data=$this->db->get('users');
return $data->result();
}
}
?>

Answer 2

you can fetch by using either result() or result_array() in model
in your case
public function get_users(){ // model
$data=$this->db->get('users');
return $data->result();
}
public function show(){ // controller
$this->load->model('user_model');
$result = $this->user_model->get_users();
foreach($result as $object){
echo $object->id;
}
}
The above method returns the query result as an array of objects, or an empty array on failure.
The below one method returns the query result as a pure array, or an empty array when no result is produced.
you can also do this
public function get_users(){ // model
$data=$this->db->get('users');
return $data->result_array();
}
public function show(){ // controller
$this->load->model('user_model');
$result = $this->user_model->get_users();
foreach($result as $object){
echo $object['id'];
}
}
for more details click here

Answer 3

you need to return result() or result_array()
<?php
class User_model extends CI_Model {
public function get_users(){
$data=$this->db->get('users');
return $data->result(); // or return $data->result_array();
}
}
?>
for result arrray you need to echo $object['id'];
and for result() same as you printing.