AdminPageFramework_Model__FormSubmission::_shouldProceed PHP Метод

    private function _shouldProceed()
    {
        if (!isset($_POST['admin_page_framework_start'], $_POST['_wp_http_referer'])) {
            return false;
        }
        $_sRequestURI = remove_query_arg(array('settings-updated', 'confirmation', 'field_errors'), wp_unslash($_SERVER['REQUEST_URI']));
        $_sReffererURI = remove_query_arg(array('settings-updated', 'confirmation', 'field_errors'), $_POST['_wp_http_referer']);
        if ($_sRequestURI != $_sReffererURI) {
            return false;
        }
        if (!isset($_POST['_is_admin_page_framework'], $_POST['page_slug'], $_POST['tab_slug'])) {
            $this->oFactory->setAdminNotice(sprintf($this->oFactory->oMsg->get('check_max_input_vars'), function_exists('ini_get') ? ini_get('max_input_vars') : 'unknown', count($_POST, COUNT_RECURSIVE)));
            return false;
        }
        $_sNonceTransientKey = 'form_' . md5($this->oFactory->oProp->sClassName . get_current_user_id());
        if ($_POST['_is_admin_page_framework'] !== $this->getTransient($_sNonceTransientKey)) {
            $this->oFactory->setAdminNotice($this->oFactory->oMsg->get('nonce_verification_failed'));
            return false;
        }
        return true;
    }