Question

At first look, this snippet seems to be fine.

// my_controller.php
$data['errors'] = (object)$this->session->userdata('errors_registration');
$this->load->view('registration/my_view',$data);

// print_r($data['errors'])
// stdClass Object
// (
//    [domain_err] => 0
//    [wbholder_err] => 0
//    [methodpayment_err] => 0
//    [createaccount_err] => 2
//    [gtc_err] => 0
// )

// my_view.php
if($errors->domain_err == 1) echo "TRUE"; else echo "FALSE"; // FALSE

And when, $data['errors'] is empty,

// print_r($data['errors'])
// stdClass Object
// (
//    [scalar] => 
// )

// my_view.php
if($errors->domain_err == 1) echo "TRUE"; else echo "FALSE";

I get this,

A PHP Error was encountered Severity: Notice Message: Undefined property: stdClass::$domain_err

To address the notice, I added isset(), making my snippet now to if(isset($errors->domain_err) == 1), however, since this change, the condition seems to be always set to true, thus outputting TRUE. Is there other way around to get over the notice while maintaining the conditional output I am expecting?

Answer 1

The reason for it always being true, is because you are comparing it now to what the function returns, which is true because $errors->domain_err is set. What you need to do is change the condition to:

if(isset($errors->domain_err) && $errors->domain_err == 1)

isset does not return the value of the variable, just whether it exists or not.