定义$ message =""变量

Question

这个代码一切正常,除了我得到一个未定义的变量警告'消息',我无法找到一种方法来定义它,因为它不是一个帖子或会话变量或任何东西.谢谢

<?php

if (isset($_POST['submit']))
{
  $newemail = $_POST['newemail'];
  $repeatnewemail = $_POST['repeatnewemail'];
  $email= ($_SESSION['email']);
  $message="";

 //open database

  if (condition)
  {
    $message="first message";
  }
}

?>

<p td class='td2'><?php echo $message;?></td>

Answer 1

把 $message="";外面的条件.

$message="";
if (isset($_POST['submit'])){
    $newemail = $_POST['newemail'];
    $repeatnewemail = $_POST['repeatnewemail'];
    $email= ($_SESSION['email']);


 //open database


    if (condition){
        $message="first message";
    }
}

?>
<p td class='td2'><?php echo $message;?></td>