function __construct() {
$this->open_connection();

    $this->magic_quotes_active = get_magic_quotes_gpc();
    $this->real_escape_string_exists = function_exists("mysqli_real_escape_string"); 
}

and
function loadResultList( $key=” ) {
$cur = $this->executeQuery();

    $array = array();
    while ($row = mysqli_fetch_object($cur)) {
        if ($key) {
            $array[$row->$key] = $row;
        } else {
            $array[] = $row;
        }
    }


    

what I know is:
Deprecated: Function get_magic_quotes_gpc() is deprecated on line 14
mysqli_free_result() expects parameter 1 to be mysqli_result, bool given on line 59 and on line 66
error online 62

I’m new to php, if anyone can help

I have already switched to several versions of PHP and MySQL