Question

我定义了$_POST索引，但收到错误消息，表明它没有定义。

以下是代码：

 if (isset($_POST['submit']) AND ($_POST['userid']) AND ($_POST['firstname']) AND ($_POST['lastname']) AND ($_POST['address']) AND ($_POST['ZIP']) AND ($_POST['phonenumber']) AND ($_POST['mail']) AND ($_POST['group']))
       {
        $result = $this->sendEmail(
           $_POST['userid'], 'mail@mymail.com', 'mail@mymail.com', $_POST['firstname'], $_POST['lastname'], $_POST['address'], $_POST['ZIP'], $_POST['phonenumber'], $_POST['mail'], $_POST['group']
        );

Answer 1

在if：

中的每个isset()上应用$_POST

if (isset($_POST['submit']) AND 
    isset($_POST['userid']) AND
    isset($_POST['firstname']) AND
    isset($_POST['lastname']) AND
    isset($_POST['address']) AND
    isset($_POST['ZIP']) AND
    isset($_POST['phonenumber']) AND
    isset($_POST['mail']) AND
    isset($_POST['group']))
{
  $result = $this->sendEmail(
    $_POST['userid'],
    'mail@mymail.com',
    'mail@mymail.com',
    $_POST['firstname'],
    $_POST['lastname'],
    $_POST['address'],
    $_POST['ZIP'],
    $_POST['phonenumber'],
    $_POST['mail'],
    $_POST['group']
);

Answer 2

你也可以这样使用。

if (isset($_POST['submit']) && isset($_POST['userid']) && isset($_POST['firstname']) && isset($_POST['lastname']) && isset($_POST['address']) && isset($_POST['ZIP']) && isset($_POST['phonenumber']) && isset($_POST['mail']) && isset($_POST['group']))

           {
               $result = $this->sendEmail(
               $_POST['userid'], 'mail@mymail.com', 'mail@mymail.com', $_POST['firstname'], $_POST['lastname'], $_POST['address'], $_POST['ZIP'], $_POST['phonenumber'], $_POST['mail'], $_POST['group']
            );
          }

Answer 3

你可以这样写 -

 if (isset($_POST['submit']) AND 
        isset($_POST['userid']) AND $_POST['userid'] != "" AND 
        isset($_POST['firstname']) AND $_POST['firstname'] != "" AND 
        isset($_POST['lastname']) AND $_POST['lastname']!= "" AND 
        isset($_POST['lastname']) AND $_POST['lastname']!= "" AND 
        isset($_POST['address']) AND $_POST['address'] != "" AND 
        isset($_POST['ZIP']) AND $_POST['ZIP'] != "" AND 
        isset($_POST['phonenumber']) AND $_POST['phonenumber'] != "" AND 
        isset($_POST['mail']) AND $_POST['mail'] != "" AND 
        isset($_POST['group']) AND $_POST['group'] != "")
       {
        $result = $this->sendEmail(
           $_POST['userid'], 'mail@mymail.com', 'mail@mymail.com', $_POST['firstname'], $_POST['lastname'], $_POST['address'], $_POST['ZIP'], $_POST['phonenumber'], $_POST['mail'], $_POST['group']
        );

Answer 4

首先，我建议检查html本身，我假设该方法设置为POST，因为其余的都在工作，但仔细检查是安全的！然后，另一个大错误是你在输入上输入名字字段时搞砸了。检查html上的所有名称，确保它们拼写正确。此外，请确保您拥有所有结束标记和开始标记，以及打开/关闭引号。

另外不要忘记将isset（）添加到上面的所有内容中。你也可以创建一个更好的功能，如

function checkSet($var){
       if(isset($var) && $var != ""){
            return $var;
       }else{
            return false;
       }
}

这将检查它是否为空字符串，以及是否已定义。很有用。如果您喜欢，还可以通过返回修剪（$ var）来修剪它。

未定义索引$ _POST，但已定义

4 个答案: