PHP-CODEIGNITER how to get data in session - php

Question

I want echo my list of trip, when I try print_r the value can show but when I echo the result always
Message: Undefined variable: adventure
Filename: views/profile.php
Line Number: 121
Backtrace:
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/profile.php
Line Number: 121
this is my controller :
public function getListTrip(){
$this->load->model('userModel');
$data['adventure'] = $this->userModel->getTrip()->result_array();
//echo ($data);
$this->load->view('profile', $data);
}
and this is my model :
function getTrip(){
$userId = $this->session->userdata('user_id');
return $this->db->get_where('adventure',['user_id' => $userId]);
}
this is my view
<table>
<?php
foreach ($adventure as $b){
echo "<tr>
<td>$b->name</td>
<td>$b->place</td>
<td>$b->category</td>
</tr>";
}
?>
</table>
so how should I edit my code to make the value show in my page whit echo or foreach not in print_r... thanks a lot

Answer 1

Change your model
function getTrip(){
$userId = $this->session->userdata('user_id');
$query= $this->db->get_where('adventure',['user_id' => $userId]);
return $query->result();
}
Also chnage in your controller
$data['adventure'] = $this->userModel->getTrip()->result_array();
To
$data['adventure'] = $this->userModel->getTrip();

Answer 2

echo is used to output one or more strings, since your $data is an array you see the error, you need to pass data to view and iterate it in the view itself, like:
public function getListTrip(){
$this->load->model('userModel');
$data['adventure'] = $this->userModel->getTrip()->result_array();
//pass data to your view
$this->load->view('yourviewname', $data);
}
For more information check Codeigniter Views
Update
Check if your array is not empty before trying to iterate thru it, like in your view::
<?php
if( !empty($adventure) ) {
foreach($adventure as $b):
?>
<tr>
<td><?php echo $b['name']; ?></td>
<td><?php echo $b['place']; ?></td>
<td><?php echo $b['category']; ?></td>
</tr>
<?php
endforeach;
}
?>

Answer 3

You cannot echo the content of an Array.
So whenever you want to view the Content of an array use print_r($arrayName);
And When you just want to print any variable just use echo $variableName;

Answer 4

I don't see any issue with your code. If you're not using autoloader to load the session library that might be your issue:
$this->load->library('session');
You can check the documentation Codeigniter sessions