PHP Como faço um link para download de documento dos usuários para o admin?

[jennife rqueres]

Formulário

<form method="post" action="" id="acc-form" accept-charset="UTF-8" enctype="multipart/form-data">
    <label>
        <?=_('Username')?>: <span class="muted"><?=_('O nome de usuário não pode ser alterado') ?></span>
    </label>
    <input type="text" name="username" value="<?php print htmlspecialchars($user->username); ?>" class="required form-control" readonly="readonly"/>
    
    <br/>
    <label>
        <?=_('E-mail:')?>
    </label>
    <input type="email" name="email" value="<?php print htmlspecialchars($user->email); ?>" class="required form-control" />
    
    <br/>
    
    <label>
        <?=_('Senha:')?> <span class="muted"><?=_('atual ou um novo') ?></span>
    </label>
    <input type="password" name="password" placeholder="****" class="required form-control" />
    
    <br/>
    
    <label>
        <?=_('Foto de Perfil:') ?>
    </label>
    <input type="file" name="file" class="form-control" />
    <br/>


    <label>
        <?=_('CPF:') ?>
    </label>
    <input type="file" name="cpfarq" class="form-control" />
    <br/>

    <label>
        <?=_('RG:') ?>
    </label>
    <input type="file" name="rgarq" class="form-control" />
    <br/>

    <label>
        <?=_('CNH:') ?>
    </label>
    <input type="file" name="cnh" class="form-control" />
    <br/>

    
    <input type="submit" name="sb_signup" value="<?=_('Atualizar') ?>" class="btn btn-info"/>

</form>

 

Eu coloquei um array para enviar os documentos, só n to conseguindo fazer ele mostrar na tabela do admin:

public function index() { $this->checkLoggedIn();

    if ($this->input->post('sb_signup')) {
        if (!$this->input->post('email') OR !$this->input->post('password')) {
            $data['form_message'] = div_class("Email e senha são obrigatórios", 'alert alert-danger');
        } else {

            $this->db->where(["email" => $this->input->post('email', true)]);
            $this->db->where("userID != " . is_user_logged_in());
            $user = $this->db->get("users");

            if (count($user->result())) {
                $data['form_message'] = '<div class="alert alert-warning">';
                $data['form_message'] .= _('Nome de usuário / e-mail em uso, escolha outro.');
                $data['form_message'] .= '</div>';
            } else {

                //profile pic
                if (isset($_FILES['file']) AND $_FILES['file']['error'] == 0) {
                    //make thumbnail
                    $rand = md5(uniqid());
                    $ext = explode(".", $_FILES['file']['name']);
                    $ext = strtolower(end($ext));

                    if (!@getimagesize($_FILES['file']['tmp_name'])) {
                        die(_("Invalid picture"));
                    }

                    $config['image_library'] = 'gd2';
                    #$config['source_image'] = getcwd() .'/uploads/' .  $rand . '.' . $ext;
                    $config['source_image'] = $_FILES['file']['tmp_name'];
                    $config['create_thumb'] = false;
                    $config['maintain_ratio'] = true;
                    $config['width'] = 48;
                    $config['height'] = 48;
                    $config['new_image'] = getcwd() . '/uploads/' . $rand . '.' . $ext;

                    $this->load->library('image_lib', $config);

                    $this->image_lib->resize();

                    if (!$this->image_lib->resize()) {
                        echo $this->image_lib->display_errors();
                    } else {
                        $thephoto = $rand . '.' . $ext;
                        $this->db->where("userID", is_user_logged_in());
                        $this->db->update("users", ['photo' => $thephoto]);
                    }
                }

                $arrayFile = array();
                $arrayFile["cpfarq"]="_cpf";
                $arrayFile["rgarq"]="_rg";
                $arrayFile["cnh"]="_cnh";
                $arrayFile["casamento"]="_casamento";

                foreach( array_keys($arrayFile) as $fileKey) {
                    if (isset($_FILES[$fileKey]) && $_FILES[$fileKey]['error'] == 0) {
                        //$rand = md5(uniqid());
                        $ext = explode(".", $_FILES[$fileKey]['name']);
                        $ext = strtolower(end($ext));
                        $tmpfile = $_FILES[$fileKey]['tmp_name'];

                        $tmpfilename = is_user_logged_in() . $arrayFile[$fileKey] . '.' .$ext; //$rand . '.' . $ext;
                        if(move_uploaded_file($tmpfile, getcwd() . '/uploads/' .$tmpfilename)) {
                            $this->db->where("userID", is_user_logged_in());
                            $this->db->update("users", [$fileKey => $tmpfilename]);
                        }
                    }
                }

 

Tabela do admin:

 <div class="table-responsive">
    <table class="table table-bordered table-striped" id="dataTbl">
        <thead>
            <tr>
                <th>ID</th>
                <th>IP Addr</th>
                <th>Username</th>
                <th>Email</th>
                <th>Sobre</th>
                <th>Ativo</th>
                <th>Remover</th>
                <th>Ação</th>

            </tr>
        </thead>
        <tbody>
            <?php foreach($users as $m) : ?>
            <tr>
                <td><?=$m->userID?></td>
                <td><?=long2ip($m->ip)?></td>
                <td><?=$m->username?></td>
                <td><?=($m->email)?></td>
                <td><?=$m->about?></td>
                <td><a href="/users/approveuser/<?=$m->userID;?>"><?php print($m->ativo ? "Ativo" : "Inativo"); ?></a></td>
                <td><a href="/admin/users/remove/<?=$m->userID;?>"><b class="glyphicon glyphicon-remove"></b></a></td>
                <td>
                    <a href="/admin/users/remove/<?=$m->userID;?>" class="btn btn-xs btn-default" onclick="return confirm('Tem certeza de que deseja ativar/desativar usuário?')">Ativar/Desativar</a>
                </td>
            </tr>

            <?php endforeach; ?>
        </tbody>
    </table>
    </div>

    <?php endif; ?>
</div>