php - 如何在成功提交表单后在 div 中创建成功消息？

Question

从逻辑上讲，以下表单每次在浏览器中启动页面时都会显示成功消息，但该表单应仅在提交成功后才显示成功消息。

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
$editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}

$message = "Record has been updated successfully.";

if ((isset($_POST["MM_update"])) && ($_POST["MM_update"] == "form1")) {
$updateSQL = sprintf("UPDATE table SET name=%s, email=%s, 

                   GetSQLValueString($_POST['name'], "text"),
                   GetSQLValueString($_POST['email'], "text"),

mysql_select_db($database_test, $test);
$Result1 = mysql_query($updateSQL, $test) or die(mysql_error()); 

$updateGoTo = "test.php";
if (isset($_SERVER['QUERY_STRING'])) {
$updateGoTo .= (strpos($updateGoTo, '?')) ? "&" : "?";
$updateGoTo .= $_SERVER['QUERY_STRING'];
}
header(sprintf("Location: %s", $updateGoTo));
}

表单的html部分如下:

<form action="<?php echo $editFormAction; ?>" method="post" name="form1" id="form1">
 <table align="center" class="test_table">
  <tr valign="baseline">
     <td align="right" nowrap="nowrap" class="table-title">Name:</td>
     <td class="table-content"><input type="text" name="name" value="<?php echo htmlentities($row_user['name'], ENT_COMPAT, 'utf-8'); ?>" size="32" /></td>
   </tr>
   <tr valign="baseline">
     <td align="right" nowrap="nowrap" class="table-title">E-mail:</td>
     <td class="table-content"><input type="text" name="email" value="<?php echo htmlentities($row_user['email'], ENT_COMPAT, 'utf-8'); ?>" size="32" /></td>
   </tr>
 </table>
 <input type="hidden" name="MM_update" value="form1" />
 <input type="hidden" name="id" value="<?php echo $row_user['id']; ?>" />
  <input class="submit" name="UpdateRecord" type="submit" id="UpdateRecord" value="Update Record" /></form>

这是在页面上的 div 中显示成功消息的方式:

<p> <?php 
  if (!empty($message)) {
  echo "<div class=\"successmessage\">" . $message . "</div>";
  } 
  ?></p>

我做错了什么？

Answer 1

我创建了两个函数来显示消息

function addMessageStack($message,$type='success')
{
    $_SESSION['sess_MessageStack'][] =  array($type,$message);  
}
function showMessageStack()
{
    $str = '';
    if(count($_SESSION['sess_MessageStack']) > 0)
    {
        for($i=0;$i<count($_SESSION['sess_MessageStack']);$i++)
        {
            $str.="<div class='".$_SESSION['sess_MessageStack'][$i][0]."Message left'>".$_SESSION['sess_MessageStack'][$i][1]."</div>";
        }
        unset($_SESSION['sess_MessageStack']);
        return $str;
    }   
}

在你的例子中使用如下

addMessageStack('Record has been updated successfully.');    
header(sprintf("Location: %s", $updateGoTo));
exit;

对于显示消息，确保有session_start();

<?php echo showMessageStack(); ?>

它只会在表单提交后显示您的消息