$sel_subjects = array();
if (isset($_POST["subjects"])) {
    $sel_subjects = $_POST["subjects"];
}
$list_name = mysql_real_escape_string(json_encode($list_name));
$list_desc = mysql_real_escape_string(json_encode($list_desc));
//   edit list
if ($action == "edit") {
    $mesaj = array();
    $query = "UPDATE liste SET \n               `name` = '" . $list_name . "',\n               `desc` = '" . $list_desc . "',  \n               `public` = '" . $list_public . "'  \n               WHERE `list_id` = '" . $list_id . "'";
    $result = mysql_query($query, $dbconnect);
    confirm_query($result);
    if (mysql_affected_rows() == 1) {
        $mesaj[] = "The list details have been updated.";
    }
    $rel_subjects = get_sel_subj_for_list($list_id);
    foreach ($rel_subjects as $subj_id) {
        if (!in_array((int) $subj_id, $sel_subjects)) {
            $query = "DELETE FROM rel_subj_list WHERE subj_id = '" . $subj_id . "' AND list_id = '" . $list_id . "'";
            $result = mysql_query($query, $dbconnect);
            confirm_query($result);
            if (mysql_affected_rows() == 1) {
                $subj_name = get_subj_name($subj_id);
                $mesaj[] = "Subject {$subj_name} has been removed from list.";
            }
        }
    }
    foreach ($sel_subjects as $subj_id) {
        if (!in_array((int) $subj_id, $rel_subjects)) {
            $query = "INSERT INTO rel_subj_list (`list_id`, `subj_id`) VALUES ('" . $list_id . "', '" . $subj_id . "')";
            $result = mysql_query($query, $dbconnect);
    }
    ?>
 /> <?php 
    __("Private list");
    ?>
<br />
      </fieldset>

      <fieldset>
         <label for="subjects"><?php 
    __("Subjects included in the list");
    ?>
</label>

         <?php 
    $sel_subj = get_sel_subj_for_list($list_id);
    $all_subjects = get_all_subjects();
    while ($row = mysql_fetch_array($all_subjects)) {
        $subj_id = $row["subj_id"];
        $subj_first_name = $row["first_name"];
        $subj_last_name = $row["last_name"];
        ?>

            <input type="checkbox" <?php 
        if (in_array($subj_id, $sel_subj)) {
            echo "checked=\"checked\"";
        }
        ?>
 name="subjects[]" value="<?php 
        echo $subj_id;
        ?>