How can I make the archive download?

Question

PHP

In general, I muddied a script that downloads an archive with photos and unzips it. At the end of the script, it transfers to another page. But not only does it not transfer to another page, it does not even download the archive. So, look where I screwed up...
HTML:

<form enctype="multipart/form-data" method="post" action="http://8bgsg.ru/storage/add_photos.php">
    <span class="word">Прикрепить ZIP архив с фото:</span><br>
    <input type="file" id="file" name="archive"><br>
    <span class="word">Выберете альбом:</span><br>
    <select id="combobox" name="album">
                    
                    <?php
                    
                        mysql_connect('127.0.0.1', 'root', '');
                        mysql_select_db('site');
                        
                        $result = mysql_query("SELECT * FROM `albums`");
                    
                        while ($row = mysql_fetch_array($result)) {
                            echo '<option value="' . $row['id'] . '">' . $row['title'] . '</option>';
                        }
                    
                    ?>
                    
    </select><br>
    <input type="submit" id="button" value="Отправить"><br>
</form>

PHP:

<?php
    
    mysql_connect('127.0.0.1', 'root', '');
    mysql_select_db('site');

    if (sizeof($_FILES) != 0 and $_FILES['archive']['type'] == "application/zip") {
        
        $name = date("d_m_Y_H_i_s");
        $zip_info = pathinfo($_FILES['archive']['name']);
        
        $upload_dir = 'archives';
        $upload_file = $upload_dir . $name . '.' . $zip_info['extension'];
        
        if (move_uploaded_file($_FILES['name']['tmp_name'], $upload_file)) {
            
            $zip = new ZipArchive();
            
            if ($zip->open($upload_file)) {
                
                $num_files = $zip->numFiles;
                
                for ($i = 0; $i < $num_files; $i++) {
                    
                    $result = $zip->statIndex($i);
                    
                    $name = date("d_m_Y_H_i_s") . "_" . $i;
                    $img_info = pathinfo($result['name']);
                    
                    $upload_dir = 'images/albums/';
                    $upload_file = $upload_dir . $name . '.' . $img_info['extension'];
                    
                    if (move_uploaded_file($result['name'], $upload_file)) {
                        
                        $disk = 'http://8bgsg.ru/storage/' . $upload_file;
                        $album = $_POST['album'];
                
                        mysql_query("INSERT INTO `photos` (`name`, `album_id`, `photo_url`, `date`) VALUES('$name', '$album', '$disk', NOW())");
                        header('Location: http://8bgsg.ru/photos');
                        
                    }
                    
                }
                
            }
            
            $zip->close();
            
            header('Location: http://8bgsg.ru/photos');
            
        }
    }

?>

Answer 1

Add the novalidate attribute to the form

Answer 2

Question: what is the size of the archive? The first thing that comes to mind is that it exceeds the sizes specified in the PHP directives max_upload_size and max_post_size.
Further, instead of sizeof($_FILES) it is better to use !empty($_FILES['archive'])
And also do print_r($_FILES) at the end, and look at its output to understand what the problem is.
PS Relying on a user-supplied type is not the best idea from a security point of view. (However, in this particular case, this is not critical.)