根據不同的選擇選項傳遞值

Question

我試圖根據用戶從下拉列表中選擇的選項獲取不同的值。 例如。 當用戶從下拉列表中選擇選項 1 => 將值 111 傳遞給 .$numbers 時

我怎么做？ 我應該在 //some code 區域中包含哪些代碼？

switch($_POST['outlet']){
    case 'a' : 
        //some code;
        //get value 111 from here
        break;
    case 'b':
        //some code;
        //get value 222 from here
        break;
    case 'c':
        //some code;
        //get value 333 from here
        break;
    default:
        //some code if the post doesn't match anything
}

Answer 1

你可以這樣做：

<select id="sc" name="outlet">
        <option value="111">1</option>
        <option value="222">2</option>
    </select>

    <select id="sh" name="outlet">
        <option value="333">3</option>
        <option value="444">4</option>
    </select>

    <select id="sw" name="outlet">
        <option value="555">5</option>
        <option value="666">6</option>
    </select>

    Then, just take the value of $_POST['outlet']

Answer 2

$numbers = null;
switch($_POST['outlet']){
    case 'a' : 
        //some code;
        //get value 111 from here
        $numbers = 111;
        break;
    case 'b':
        //some code;
        //get value 222 from here
        $numbers = 222;
        break;
    case 'c':
        //some code;
        //get value 333 from here
        $numbers = 333;
        break;
    default:
        //some code if the post doesn't match anything
        break;
}

echo is_null($numbers) ? 'Numbers is null' : $numbers; // <- correct value