$query = "UPDATE subjects SET
menu_name = '{$menu_name}',
position = {$position},
visible = {$visible}
WHERE id = {$id}";
$result = mysql_query($query, $connection);

$query = "UPDATE subjects SET 
menu_name = '{$menu_name}', 
position = {$position}, 
visible = {$visible},
WHERE id = {$id}";

<?php
    function confirm_query($result_set) {
        if (!$result_set) {
            die("Database query failed: " . mysql_error());
            }
    }
    
    function get_all_subjects() {
        global $connection;
        $query = "SELECT *
                FROM subjects
                ORDER BY position ASC";
        $subject_set =

<?php require_once("includes/connection.php"); ?>
<?php require_once("includes/functions.php"); ?>
<?php include("includes/header.php"); ?>
    <table id=structure>
        <tr>
        <td

<?php
            $subject_set = get_all_subjects();
            while ($subject = mysql_fetch_array($subject_set)) {
                echo "<li>{$subject["menu_name"]}</li>";