表单重定向问题 [英] Form redirection problem

问题描述

可能的重复:
如何阻止表单发送更多电子邮件最初成功后的时间.

首先，我使用目录构建了我的网站.所以基本上每个页面都是一个目录，在那个目录中，我有一个名为 index.php 的文件.

First of all, i have structured my website using directories. So basically every page is a directory and in that directory, i have a file called index.php.

我的网站上有四个联系表格，目前，似乎都可以使用 hnadler.php 文件.处理程序文件验证数据，检查发布的表单 ID，并基于此适当地路由电子邮件.如果成功发送，将显示成功消息.但是，我当前的实现存在缺陷，如果用户刷新，则会发送另一封邮件.我怎样才能用我现有的代码解决这个问题?谢谢

I have four contact forms on my site, and at the moment, the seem to all work using the hnadler.php file. The handler file validates the data, checks the form-id posted and based on that, it routes the email appropraitely. A success message is displayed if successfully sent. However, my current implimentation is flawed in that if the user refreshes, another mail is sent. How can i solve this with my existing code? Thank you

//handler.php   
<?php
    if(isset($_POST['submit'])) {
    //carry out validation

    if(!isset($hasError)) {
        //check the form id posted and set email address in $emailTo accordingly

        $body = "Name: $name \n\nEmail: $email \n\nEnquiry: $enquiry";
        $headers = 'From: My Site <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;

        mail($emailTo, $subject, $body, $headers);
        $emailSent = true;        
    }
}

//index.php
<?php if(isset($hasError)) { ?> 
    <p class="error">Please make sure you have filled all fields with valid information. Thank you.</p>
<?php } ?>                        
<?php if(isset($emailSent) && $emailSent == true) { ?>
    <p><strong>Your enquiry was sent successfully.</strong></p>
    <p>Thank you for your enquiry! Your email was successfully sent and we will be in touch with you promptly.</p>
<?php }; ?>                       
<form id="contactform" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <fieldset>
        <legend>Enquiry form</legend>
        <label for="name">Name:</label><input type="text" size="50" name="name" id="name" value="" class="required" />
        <label for="email">Email:</label><input type="text" size="50" name="email" id="email" value="" class="required email" />
        <label for="enquiry">Enquiry:</label><textarea rows="5" cols="20" name="enquiry" id="enquiry" class="required"></textarea>
        <input type="submit" name="submit" value="Submit enquiry" class="curved-btn"></input>
        <input type="hidden" id="form-id" name="form-id" value="general"></input>
    </fieldset>
</form>

?>

推荐答案

浏览器将/可以在刷新时重新发布数据，因此它看起来像一个新请求.

The browser will/can repost the data on refresh, so it will look like a new request.

快速解决方法是在表单提交后重定向:

A quick fix is to redirect after the form submission:

header("Location: success.php");

这样，如果刷新他们刷新成功页面，而不是您发布到的页面.

That way if the refresh they refresh the success page, not the page you posted to.

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