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php 文件上载有关问题

Jun 13, 2016 pm 01:09 PM
content gt header quot

php 文件下载问题

PHP code
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function download_file($filename){
     //below to provide the download
                    if (file_exists($filename)) {
                        
                         $file = fopen($filename);
                    header('Content-Description: File Transfer');
                    header('Content-Type: application/octet-stream');
                    header('Content-Disposition: attachment; filename=' . basename($filename));
                    header('Content-Transfer-Encoding: binary');
                    header('Expires: 0');
                    header('Cache-Control: must-revalidate');
                    header('Pragma: public');
                    header('Content-Length: ' . filesize($filename) . ' bytes');
                    //ob_clean();
                    //flush();
                    readfile($filename);
                    fclose($file);
                       exit;
}
$this->_redirect('xxxxxxx');


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以上是网上通用的一段php文件下载的代码,我的问题是这样的,我要实现点击一个button实现下载同时实现刷新页面的内容吗,也就是说我不希望 exit;我在文件下载了之后还要继续执行之后的代码。也就是说我的下载完成之后$this->_redirect('xxxxxxx');这个语句不执行,请教下有什么解决方法吗?

------解决方案--------------------

$file = fopen($filename);
readfile($filename);
fclose($file);
直接readfile就行了。


这个重定向只能用JS做了, 但onclick只能标记一下变量, 等失去焦点检查一下变量再说.


C/C++ code
[User:root Time:23:25:51 Path:/home/apache/web]$ cat index.html 



<meta http-equiv="Content-Type" content="text/html; charset=utf-8">


<script type="text/javascript">
var is_click = false;
</script>
<a href="index.php" onclick="is_click = true;" onmouseout="if (is_click) location.href='main.php';">aaa</a>


<br><font color="#e78608">------解决方案--------------------</font><br>不可以,一个HTTP会话只能传递一种类型的数据<br>况且下载对用户而言是异步的
<br><font color="#e78608">------解决方案--------------------</font><br>打开而不是保存,这是因为文件类型浏览器能够识别,比如chrome会显示pdf文件,而不是保存。<br>你需要额外添加一个Header响应头:<br>Content-Disposition: attachment; filename="$文件名"<br><br>至于如何添加,你可以让PHP来读取输出这个生成的文件,并用header函数即可。<br>或者web服务器也可以配置对文件强制下载,不过我不知道怎么设置 <div class="clear">
                 
              
              
        
            </div>
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