我有一个php添加,它调用LaTeX然后将PDF传递给浏览器。由于我的用户将为此服务付费,我想确保他们可以选择保存PDF而不是一次又一次地点击我的服务器。
exec("cd tex && latex {$_SESSION['sen_id']}.tex && pdflatex {$_SESSION['sen_id']}.tex", $output);
$pdf = substr($file,0,-3).'pdf';
if (file_exists($pdf)) {
//header('Content-Description: File Transfer');
header('Content-Type: application/pdf');
//header('Content-Length: ' . filesize($pdf));
header('Content-Disposition: attachment;filename='.date('Ymd-His').'-'.basename($pdf));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: no-cache');
header('Pragma: no-cache');
ob_clean();
flush();
readfile($pdf);
exit;
} else {
echo '<h1>No PDF Produced</h1>';
echo nl2br(print_r($output,true));
}
使用Wireshark,我注意到Content-Disposition标头未设置或未到达客户端。
HTTP/1.1 200 OK\r\n
Date: Tue, 22 Jun 2010 14:15:10 GMT\r\n
Server: Apache/2.0.55 (Ubuntu) mod_jk/1.2.14 mod_python/3.1.4 Python/2.4.3 PHP/5.1.2 mod_ssl/2.0.55 OpenSSL/0.9.8a mod_perl/2.0.2 Perl/v5.8.7\r\n
X-Powered-By: PHP/5.1.2\r\n
Set-Cookie: SESS0d6c65b0599f5b70f6bbc50cfc5b2f94=2b23ba1f74f5f1f641365e9fbb45870d; expires=Thu, 15 Jul 2010 17:48:30 GMT; path=/; domain=.<domain removed>\r\n
Content-Transfer-Encoding: binary\r\n
Expires: 0\r\n
Cache-Control: no-cache\r\n
Pragma: no-cache\r\n
Connection: close\r\n
Transfer-Encoding: chunked\r\n
Content-Type: application/pdf\r\n
\r\n
到目前为止,我发现的提示说“使用octet-steam”,“不要使用octet-stream”,“在冒号后放置空格”,“将每个单词大写”和“用引号括起文件名” ”。我想幸运的人会发现很多错误信息。