Message: Undefine variable: exam

manpreet Best Answer 3 years ago

controller: Test.php

php
defined('BASEPATH') OR exit('No direct script access allowed');
class Test extends CI_Controller 
{
    function __construct() 
    {
        parent :: __construct();
        $this->load->helper(array('form', 'url'));
        $this->load->model('Fetch_data');
    }
    public function agriculture_exam()
    {
        $stream = 'agriculture';
        $data['exam'] = $this->Fetch_data->top_agriculture_exams($stream);
        $this->load->view('header',$data);
    }
}

view: header.php

 class="list">
php 
    foreach($exam as $row) 
    {
       echo "
".$row['exam_name']."
"; 
    }
?>

model: Fetch_data.php

php  
    class Fetch_data extends CI_Model  
    {  
        function __construct()  
        {   
            parent::__construct();  
        }  
        public function top_agriculture_exams($stream)
        {
            $this->db->select('exam_name');
            $this->db->from('all_exams_details');
            $this->db->where('field',$stream);
            $this->db->order_by('exam_name');
            $this->db->limit('10');
            $query = $this->db->get(); 
            $result = $query->result_array();
            return $result;
        }
    }

I am new in ci. In controller i.e. Test.php I am defining $stream='agriculture' and pass $stream variable to top_agriculture_exams model. Now, when I am fetching data on header.php file it show me a Message: Undefine variable: $exam I don't know why. So, how can I fix it ?please help me.

Thank You

manpreet 3 years ago

 class="list">
    php
    if ($exam !== NULL):
        foreach ($exam as $row):
            echo "
" . $row['exam_name'] . "
";
        endforeach;
    endif;
    ?>

php
var_dump($exam);
?>

php  
    class Fetch_data extends CI_Model  
    {  
        function __construct()  
        {   
            parent::__construct();  
        }  
        public function top_agriculture_exams($stream)
        {
            $this->db->select('exam_name');
            $this->db->from('all_exams_details');
            $this->db->where('exam_name',$stream);
            $this->db->order_by('exam_name');
            $this->db->limit('10');
            $query = $this->db->get(); 
            $result = $query->result_array();
            return $result;
        }
    }