/**
* Check to see if a user has visited a specific unit.
*
* Better to use Course_Completion[] class. But keeping this method for legacy.
*
* @see Course_Completion
*
* @param int $unit_ID
* @param string $user_ID
*
* @return bool True if user has accessed the course at least once.
*/
function is_unit_visited($unit_ID = 0, $user_ID = '')
{
if ($user_ID == '') {
$user_ID = $this->ID;
}
$get_old_values = get_user_option('visited_units', $user_ID);
$get_old_values = explode('|', $get_old_values);
if (cp_in_array_r($unit_ID, $get_old_values)) {
return true;
} else {
return false;
}
}
function set_unit_visited($user_ID, $unit_ID)
{
$global_option = !is_multisite();
$get_old_values = get_user_option('visited_units');
$get_new_values = explode('|', $get_old_values);
if (!cp_in_array_r($unit_ID, $get_new_values)) {
$get_old_values = $get_old_values . '|' . $unit_ID;
update_user_option($user_ID, 'visited_units', $get_old_values, $global_option);
}
}
function cp_in_array_r($needle, $haystack, $strict = false)
{
foreach ($haystack as $item) {
if (($strict ? $item === $needle : $item == $needle) || is_array($item) && cp_in_array_r($needle, $item, $strict)) {
return true;
}
}
return false;
}