php文件下载阻止url更改

时间:2017-04-18 13:03:40

标签: php download

我用它来下载文件:

<a href="download_init.php?Down=01.zip">download here</a>

download_init.php:

<?php
 $Down=$_GET['Down'];
?>

<html>
  <head>
  <meta http-equiv="refresh" content="0;url=<?php echo $Down; ?>">
 </head>
<body>
 </body>
 </html>

有没有办法在点击没有ajax的链接时阻止浏览器网址更改?

download_init.php?Down=01.zip

点击此处:http://www.firegrid.co.uk/scripts/download/index.php

点击第一个链接,网址不会改变,与其他链接不同。

2 个答案:

答案 0 :(得分:1)

为锚标记添加download属性:

<a href="download_init.php?Down=01.zip" download>download here</a>

有关HTML download Attribute

的详细信息

如果您想使用header,请参阅this link

答案 1 :(得分:1)

您可以使用少量header功能执行实际下载,如下面的代码所示。

然而;首先,您可能需要在应用程序的根目录下创建一个任意处理文件(例如:download_init.php)。现在在download_init.php文件中,您可以添加如下内容:

<?php 

// CHECK THAT THE `d` PARAMETER IS SET IN THE GET SUPER-GLOBAL:
// THIS PARAMETER HOLDS THE PATH TO THE DOWNLOAD-FILE...
// IF IT IS SET, PROCESS THE DOWNLOAD AND EXIT...
if(isset($_GET['d']) && $_GET['d']){
    processDownload($_GET['d']);
    exit;
}

function processDownload($pathToDownloadFile, $newName=null) {
    $type               = pathinfo($pathToDownloadFile, 
                                   PATHINFO_EXTENSION);
    if($pathToDownloadFile){
        if(file_exists($pathToDownloadFile)){
            $size       = @filesize($pathToDownloadFile);
            $newName    = ($newName) ? $newName . ".{$type}" :basename($pathToDownloadFile);
            header('Content-Description: File Transfer');
            header('Content-Type: ' . mime_content_type ($pathToDownloadFile ));
            header('Content-Disposition: attachment; filename=' . $newName);
            header('Content-Transfer-Encoding: binary');
            header('Connection: Keep-Alive');
            header('Expires: 0');
            header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
            header('Pragma: public');
            header('Content-Length: ' . $size);
            return(readfile($pathToDownloadFile));
        }
    }
    return FALSE;
}

然而,这意味着您的链接现在会有如此不同的href值:

<!-- THIS WOULD TRIGGER THE DOWNLOAD ONCE CLICKED --> 
<a href="download_init.php?d=path_to_01.zip">download here</a>

如果你发现这种Header方法对你的目的来说太无关紧要了; @Sanchit Gupta提供了HTML5 download属性....

的解决方案