Php表单生成器框架从会话

Question

我目前正在使用PFBC framework来设置表单。我有一个小的结账表格，我需要发布（步骤1）。验证并发布后，表单重定向到下一页（步骤2）。

我想让客户在使用后退按钮（浏览器）时更改其表单输入。

不知怎的，我没有看到设法预先填充会话中的字段。表单类以表格形式定义：php

$form = new Form("question");

// Prevent bootstrap and jquery from re-loading, already loaded in doc head
$form->configure(array("prevent" => array("jQuery"), "view" => new View_SideBySide, "labelToPlaceholder" => 0));
$form->addElement(new Element_Hidden("form", "question"));

$form->addElement(new Element_HTML('<hr />'));
$form->addElement(new Element_Select("Type:", "type", $options, array("ID" => "type", "class" => "form-control", "required" => 1, "data-placeholder" => "Kies een type")));
$form->addElement(new Element_Textbox("Titel:", "title", array("ID" => "title", "class" => "form-control", "required" => 1, "placeholder" => "Geef hier een duidelijke titel op")));
$form->addElement(new Element_Button("Verstuur", "submit", array("ID" => "submit")));
$form->addElement(new Element_HTML('hr />'));

$form->render();
echo $id;
//----------AFTER THE FORM HAS BEEN SUBMITTED----------
if ($_POST["form"] == 'question') {
    //ADDITIONELE VALUES

    //UNSET VALUES THAT DONT BELONG IN THE DB
    unset($_POST["form"]);
    //ENTER DATA INTO DB
    //$api->dbSave('application', $_POST);

    //$id  = mysql_insert_id();
    //$_SESSION['formpost'] = $id;

    //CLEAR VALUES AND REDIRECT
    Form::clearValues("question");

    header("location: " . $this->root . "next-page/step-2/");
}