Question

我正在编写一个小的Wordpress插件，该插件将提供联系表，提交表单后，将触发文件下载，并且需要显示确认消息。

问题是，我正在使用以下内容触发文件下载：

header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary"); 
header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\""); 
readfile($file_url);

这将触发下载正常。但是，接下来我应该显示以下确认消息：

$output = '<div id="' . $unique_id . '" class="' . $css_class . '">';
$output .= $content;
if($a['provide_download_link'] == '1'){
    $output .= '<p><a href="'.$file_url.'">Click here to download.</a></p>';
}
$output .= '</div>';
return $output;

但是，这不起作用，而是页面停留在表单显示的状态。在“返回$ output”之前，我还尝试添加：

header('Content-Type: text/html');

希望它会在触发文件下载后更改标头Content-Type，然后显示确认消息的html。

如果我尝试在这两个操作之间切换，返回输出然后触发文件下载，则确认消息显示得很好，但是文件下载没有被触发。

这是我的完整代码：

if(isset($_POST['gd_fdf_submit']) && $_POST['gd_fdf_submit'] == $a['submit_label']){
    if($_POST['gd_fdf_validation'] == ''){
        $file_url = $a['file_url'];
        $output = '<div id="' . $unique_id . '" class="' . $css_class . '">';
            $output .= $content;
            if($a['provide_download_link'] == '1'){
                $output .= '<p><a href="'.$file_url.'">Click here to download.</a></p>';
            }
        $output .= '</div>';

        header('Content-Type: application/octet-stream');
        header("Content-Transfer-Encoding: Binary"); 
        header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\""); 
        readfile($file_url);
        if($a['form_recipient'] == ''){
            $recipient = get_option('admin_email');
        } else {
            $recipient = $a['form_recipient'];
        }
        if($a['from_email'] == ''){
            $from = get_option('admin_email');
        } else {
            $from = $a['from_email'];
        }
        $headers[] = 'MIME-Version: 1.0';
        $headers[] = 'Content-Type: text/html; charset=UTF-8';
        $headers[] = "From: " . $from;
        if(isset($_POST['user_email']) && $_POST['user_email'] != ''){
            $headers[] = "Reply-To: " . $_POST['user_email'];
        }

        $subject = $a['email_subject'];

        $message = '';
        if(isset($_POST['user_name']) && $_POST['user_name'] != ''){
            $message .= '<strong>Name:</strong> ' . $_POST['user_name'] . '<br />';
        }
        if(isset($_POST['user_email']) && $_POST['user_email'] != ''){
            $message .= '<strong>E-Mail:</strong> ' . $_POST['user_email'] . '<br />';
        }
        if(isset($_POST['user_phone']) && $_POST['user_phone'] != ''){
            $message .= '<strong>Phone:</strong> ' . $_POST['user_phone'] . '<br />';
        }
        if(isset($_POST['user_message']) && $_POST['user_message'] != ''){
            $message .= '<strong>Message:</strong> ' . $_POST['user_message'] . '<br />';
        }
        $message .= '<strong>File Downloaded:</strong> ' . $file_url;

        mail($recipient, $subject, $message, implode("\r\n", $headers));

        header('Content-Type: text/html');
        return $output;
    }
}

在这种情况下，文件下载被触发得很好，但随后不会显示确认消息。

或者：

if(isset($_POST['gd_fdf_submit']) && $_POST['gd_fdf_submit'] == $a['submit_label']){
    if($_POST['gd_fdf_validation'] == ''){
        $file_url = $a['file_url'];
        $output = '<div id="' . $unique_id . '" class="' . $css_class . '">';
            $output .= $content;
            if($a['provide_download_link'] == '1'){
                $output .= '<p><a href="'.$file_url.'">Click here to download.</a></p>';
            }
        $output .= '</div>';
        return $output;

        header('Content-Type: application/octet-stream');
        header("Content-Transfer-Encoding: Binary"); 
        header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\""); 
        readfile($file_url);
        if($a['form_recipient'] == ''){
            $recipient = get_option('admin_email');
        } else {
            $recipient = $a['form_recipient'];
        }
        if($a['from_email'] == ''){
            $from = get_option('admin_email');
        } else {
            $from = $a['from_email'];
        }
        $headers[] = 'MIME-Version: 1.0';
        $headers[] = 'Content-Type: text/html; charset=UTF-8';
        $headers[] = "From: " . $from;
        if(isset($_POST['user_email']) && $_POST['user_email'] != ''){
            $headers[] = "Reply-To: " . $_POST['user_email'];
        }

        $subject = $a['email_subject'];

        $message = '';
        if(isset($_POST['user_name']) && $_POST['user_name'] != ''){
            $message .= '<strong>Name:</strong> ' . $_POST['user_name'] . '<br />';
        }
        if(isset($_POST['user_email']) && $_POST['user_email'] != ''){
            $message .= '<strong>E-Mail:</strong> ' . $_POST['user_email'] . '<br />';
        }
        if(isset($_POST['user_phone']) && $_POST['user_phone'] != ''){
            $message .= '<strong>Phone:</strong> ' . $_POST['user_phone'] . '<br />';
        }
        if(isset($_POST['user_message']) && $_POST['user_message'] != ''){
            $message .= '<strong>Message:</strong> ' . $_POST['user_message'] . '<br />';
        }
        $message .= '<strong>File Downloaded:</strong> ' . $file_url;

        mail($recipient, $subject, $message, implode("\r\n", $headers));
    }
}

请注意，这里我已将“返回$ output”移到“ header（'Content-Type：application / octet-stream'）;”上方。等等。在这种情况下，确认消息显示得很好，但是文件下载没有被触发。

我哪里出错了？

下载文件后获取要显示的HTML确认消息

0 个答案: