Fatal Error: CodeIgniter “Using $this when not in object context” in function

A PHP Error was encountered

Severity: Error

Message: Using $this when not in object context

Filename: helpers/user_activity_helper.php

Line Number: 1

Backtrace:

Solution:

If you want to access the CI framework from inside a plain function, you need to get an instance of CI.

function get_dates($id) {
    $ci =& get_instance();

    $class = $ci->db->query("SELECT * FROM schedule WHERE class_id='".$id."'");
    $class = $class->result_array();
    return $class;
}