Question

This is my pizza website page, It is pizza overview page. 当我点击此下拉列表，并选择披萨类型时，页面不会重定向，也不会显示特定的披萨（我在下拉列表中选择的类型），它会显示所有比萨饼，PLZ任何人都可以提供帮助我吗？

这是我的提交按钮代码。

class pizzaController {

function CreatePizzaDropdownList()
{
    $pizzaModel = new PizzaModel();
    $result = "<from action = '' method = 'post' width = '200px'>
        please select a type:
        <select name = 'types'>
        <option value = '%'>All</option>
        " . $this->CreateOptionValues($pizzaModel->GetPizzaByTypes()).

            "</select>

            <input type = 'submit' value = 'Search'/> 
            </form>";


    return $result;

}

Answer 1

你宣布了一个＆＃39;来自＆＃39;而不是一种形式的＆＃39;

变化

$result = "<from action = '' method = 'post' width = '200px'>

到

$result = "<form action = '' method = 'post' width = '200px'>

Answer 2

将此更改为

$result = "<from action

此

$result = "<form action

以及action = '' 为空

所以最终代码将是

$result = "<form action = '' method = 'post' width = '200px'>
                please select a type:
                <select name = 'types'>
                <option value = '%'>All</option>
                    ". $this->CreateOptionValues($pizzaModel->GetPizzaByTypes())
                    ."</select>
                    <input type = 'submit' value = 'Search'/> 
            </form>";

Answer 3

撰写template <typename Object> void node<Object>::set_data(const Object& new_data){ word = new_data; } template <typename Object> void node<Object>::set_link(node<Object>* new_link){ next= new_link; } template <typename Object> void node<Object>::set_previous(node<Object>* new_prev) { previous = new_prev; } template <typename Object> const Object& node<Object>::data() const{ //return the word return word; } template <typename Object> const Object& node<Object>::link() const { //return next node (const function) return next->data(); } template <typename Object> const Object& node<Object>::back() const { //return previous node (const) return previous->data(); }代替<form action = '' method = 'post' width = '200px'>

修改后的代码：

<from action = '' method = 'post' width = '200px'>

提交按钮无法在我的php披萨网站上运行

3 个答案: