PHP + PDF，如何使用 curl 保存下载的 PDF? [英] PHP + PDF, how to save a downloaded PDF using curl?

问题描述

欢迎

我在将下载的 pdf 保存在页面上时遇到了一点问题.要下载 pdf，我使用 Curl:

I have a little problem with saving the downloaded pdf on the page. To download pdf I use Curl:

$CurlConnect = curl_init();
curl_setopt($CurlConnect, CURLOPT_URL, 'http://website.com/invoices/download/1');
curl_setopt($CurlConnect, CURLOPT_POST,   1);
curl_setopt($CurlConnect, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($CurlConnect, CURLOPT_POSTFIELDS, $request);
curl_setopt($CurlConnect, CURLOPT_USERPWD, $login.':'.$password);
$Result = curl_exec($CurlConnect);

现在在 $Result(string) 我有所有 PDF 文件内容.现在开始我的问题.我想保存下载的pdf:

Now in $Result(string) i have all PDF file content. And now begins my problem. I would like to save the downloaded pdf:

header('Cache-Control: public'); 
header('Content-type: application/pdf');
header('Content-Disposition: attachment; filename="new.pdf"');
header('Content-Length: '.filesize($Result));
readfile($Result);

不幸的是，当我保存或打开一个新的 PDF 文件时，我得到一个空白文档.也许问题出在以下几行:

Unfortunately, when I save or open a new PDF file, I get a blank document. Perhaps the problem is with the last lines of:

header('Content-Length: '.filesize($Result));
readfile($Result);

不幸的是，我不知道如何更改它们以使其正常工作......我请求您的帮助.谢谢

Unfortunately, I do not know what to change them to make it work ... I ask for your help. Thanks

推荐答案

两者 filesize 和 readfile 接受文件作为参数.您提供的是字符串而不是文件.

Both filesize and readfile accepts files as arguments. You are providing a string instead of a file.

请试试这个.

$CurlConnect = curl_init();
curl_setopt($CurlConnect, CURLOPT_URL, 'http://website.com/invoices/download/1');
curl_setopt($CurlConnect, CURLOPT_POST,   1);
curl_setopt($CurlConnect, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($CurlConnect, CURLOPT_POSTFIELDS, $request);
curl_setopt($CurlConnect, CURLOPT_USERPWD, $login.':'.$password);
$Result = curl_exec($CurlConnect);

header('Cache-Control: public'); 
header('Content-type: application/pdf');
header('Content-Disposition: attachment; filename="new.pdf"');
header('Content-Length: '.strlen($Result));
echo $Result;

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