HTML Select 选项仅将第一个值传递给 PHP

Question

我正在编写一个程序，它使用 HTML 中的 <select>。当我提交表单并执行 PHP 脚本时，我使用 $_POST 从 HTML 页面获取所选选项。但是，它每次都只传递一个“1”。我试过选择不同的值，但它总是选择 1。这是代码：

HTML:

<form id="form_22942" class="appnitro" method="post" action="../process/process.php">
  <div class="form_description"></div>
  </li>
  <li class="section_break">
    <h3>Deployment Constraints</h3>
    <p></p>
  </li>
  <li id="li_11">
    <label class="description" for="element_11">Corporate Policies and Procedures: </label>
    <div>
      <select class="element select medium" id="element_11" name="element_11"> 
        <option value="" selected="selected"></option>
        <option value="1" >Flexible</option>
        <option value="2" >Fixed</option>
      </select>
    </div>
</form>

PHP (process.php):

$corp_policy = $_POST['element_11'];
$entityname2 = "corp_policy";

if ($corp_policy = '1') {
    echo "<center>Corporate policies and procedures are flexible.<center>";
    $corp_policy_text = "Flexible";
}
else if ($corp_policy = '2') {
    echo "<center>Corporate policies and procedures are fixed.<center>";
    $corp_policy_text = "Fixed";
}

Answer 1

您将 1 赋值给 $corp_policy 而不是比较两个操作数。

使用==或===

查看文档以获取更多信息：http://php.net/manual/en/language.operators.comparison.php

Answer 2

您应该使用这些：(==)

if ($corp_policy == '1') {
    echo "<center>Corporate policies and procedures are flexible.<center>";
    $corp_policy_text = "Flexible";
}
else if ($corp_policy == '2') {
    echo "<center>Corporate policies and procedures are fixed.<center>";
    $corp_policy_text = "Fixed";
}

而不是这些：(=)

if ($corp_policy = '1') {
    echo "<center>Corporate policies and procedures are flexible.<center>";
    $corp_policy_text = "Flexible";
}
else if ($corp_policy = '2') {
    echo "<center>Corporate policies and procedures are fixed.<center>";
    $corp_policy_text = "Fixed";
}

Answer 3

<select class="element select medium" id="element_11" name="element_11"> 
<option disabled selected > -- select an option -- </option>
        <option value="" selected="selected"></option>
        <option value="1" >Flexible</option>
        <option value="2" >Fixed</option>
 </select>

对我有用

HTML Select 选项仅将第一个值传递给 PHP

HTML Select Option Only Passing First Value To PHP

html

php

html-select