下载文件Curl with url var [英] Download file Curl with url var

问题描述

我想下载一个带有Curl的文件。
问题是下载链接不直接，例如：

I would like to download a file with Curl. The problem is that the download link is not direct, for example:

http://localhost/download.php?id=13456

当我尝试使用curl下载文件时，它会下载文件下载。 php！

When I try to download the file with curl, it download the file download.php!

这是我的curl代码：

Here is my curl code:

        ###
        function DownloadTorrent($a) {
                    $save_to = $this->torrentfolder; // Set torrent folder for download
                    $filename = str_replace('.torrent', '.stf', basename($a));

                    $fp = fopen ($this->torrentfolder.strtolower($filename), 'w+');//This is the file where we save the information
                    $ch = curl_init($a);//Here is the file we are downloading
                    curl_setopt($ch, CURLOPT_ENCODING, "gzip"); // Important 
                    curl_setopt($ch, CURLOPT_TIMEOUT, 50);
                    curl_setopt($ch, CURLOPT_URL, $fp);
                    curl_setopt($ch, CURLOPT_HEADER,0); // None header
                    curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); // Binary trasfer 1
                    curl_exec($ch);
                    curl_close($ch);
                    fclose($fp); 
    }

有没有办法在不知道路径的情况下下载文件？

Is there a way to download the file without knowing the path?

推荐答案

您可以尝试CURLOPT_FOLLOWLOCATION

You may try CURLOPT_FOLLOWLOCATION

跟随服务器作为HTTP头的一部分
发送的任何Location：头（注意这是递归的，PHP将遵循发送它的许多
Location：头部，除非CURLOPT_MAXREDIRS是
set）。

TRUE to follow any "Location: " header that the server sends as part of the HTTP header (note this is recursive, PHP will follow as many "Location: " headers that it is sent, unless CURLOPT_MAXREDIRS is set).

所以它会导致：

function DownloadTorrent($a) {
    $save_to = $this->torrentfolder; // Set torrent folder for download
    $filename = str_replace('.torrent', '.stf', basename($a));

    $fp = fopen ($this->torrentfolder.strtolower($filename), 'w+');//This is the file where we save the information
    $ch = curl_init($a);//Here is the file we are downloading
    curl_setopt($ch, CURLOPT_ENCODING, "gzip"); // Important 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 50);
    curl_setopt($ch, CURLOPT_FILE, $fp);
    curl_setopt($ch, CURLOPT_HEADER,0); // None header
    curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); // Binary transfer 1
    curl_exec($ch);
    curl_close($ch);
    fclose($fp); 
}

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