redirect($_SERVER['HTTP_REFERER']);

$this->csrf_protect();

/**
<br> * Generate the closing tag for an HTML form, including CSRF token and inline validation errors (if any).
<br> *
<br> * @return string The HTML closing tag for the form.
<br> */
<br>/**
<br> * Generate the closing tag for an HTML form, including CSRF token and inline validation errors (if any).
<br> *
<br> * @return string The HTML closing tag for the form.
<br> */
<br>function form_close(): string {
<br> // 1. Generate the CSRF token
<br> //$csrf_token = bin2hex(random_bytes(32));
<br> if (!isset($_SESSION['csrf_token'])) {
<br> $_SESSION['csrf_token'] = bin2hex(random_bytes(32));
<br> }
<br>
<br> // 2. Set the token as a session variable
<br> //$_SESSION['csrf_token'] = $csrf_token;
<br>
<br> // 3. Create the hidden form field for CSRF token
<br> $html = '&lt;input type=&quot;hidden&quot; name=&quot;csrf_token&quot; value=&quot;' . $_SESSION['csrf_token'] . '&quot;&gt;';
<br>
<br> // 4. Add the closing form tag
<br> $html .= '&lt;/form&gt;';
<br>
<br> // 5. Include inline validation errors (if any)
<br> if (isset($_SESSION['form_submission_errors'])) {
<br> $errors_json = json_encode($_SESSION['form_submission_errors']);
<br> $inline_validation_js = highlight_validation_errors($errors_json);
<br> $html .= $inline_validation_js;
<br> unset($_SESSION['form_submission_errors']);
<br> }
<br>
<br> return $html;
<br>}