I am converting my site from MySQL to MySQLi but all of my queries had stopped to work.
I have tried everything but queries are not making any entries into the database, I will provide a couple of the queries that aren't working.
Where did I do a mistake?
    $sql             = array();
    $sql             = "SELECT my_mailban,mban_reason 
                              FROM members
                              WHERE playerid = '" . mysqli_real_escape_string($con, $_SESSION['playerid']) . "'";
    $mb               = array();
    $mb               = mysqli_fetch_array(mysqli_query($con, $sql));
    $_POST['message'] = stripslashes($_POST['message']);
    $_POST['subject'] = stripslashes($_POST['subject']);
    $_POST['to']      = abs(intval($_POST['to']));
$sql = array();
$sql = "INSERT INTO member_mail
                                 VALUES ('NULL',
                                         '" . mysqli_real_escape_string($con, $_POST['to']) . "',
                                         '" . mysqli_real_escape_string($con, $_SESSION['playerid']) . "',
                                         '" . mysqli_real_escape_string($con, $_POST['subject']) . "',
                                         '" . mysqli_real_escape_string($con, $_POST['message']) . "',
                                         unix_timestamp(),
                                         '0')";
            mysqli_query($con, $sql);
Thank you
 
    